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(x+5x+7x+8x)(3) how to find its product?

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Add all the x terms and multiply it with 3 answer will be =63x

Posted on Apr 01, 2010

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Demonstrate how to multiply two binomials


Try to seek these: By using the suggested format:
Suggested su
  1. Adding and Subtracting Binomials
    • 1

      Arrange each term in each binomial in order of degree from greatest to least. The degree of a binomial is the exponent attached to the term. For example, 4x^2 is a second degree term.

    • 2

      Multiply each term in the binomial that is being subtracted by -1 to turn it into an addition problem. For example, the problem (8x^2 + 8) - (x^2 - 2) becomes (8x^2 + 8) + (-x^2 + 2).

    • 3

      Combine like terms. In the example problem, the x^2 terms are combined and the constant terms are combined, yielding (8x^2 + 8) + (-x^2 + 2) = 7x^2 + 10.

    Multiplying Binomials
    • 4

      Understand the F.O.I.L. method. F.O.I.L. is an acronym standing for first, outside, inside and last. It means that you multiply the first number of the first binomial by the first number of the second, then the numbers on the outside (the first term of the first binomial by the second term of the second binomial) and so on. This ensures that both numbers in the first binomial are multiplied by both numbers in the second.

    • 5

      Use the F.O.I.L. method to multiply the two binomials together. For example, (3x + 4)(3x - 4) = 9x^2 +12x - 12x - 16. Notice that -12x is the product of the outside terms and -16 is the product of the last terms, 4 and -4.

    • 6

      Simplify. There will almost always be like terms to combine. In the example, 12x and -12x cancel out, yielding the answer 9x^2 - 16.

    Dividing Binomials
    • 7

      Use the distributive property to divide both terms in the binomial by the monomial divisor. For example, (18x^3 + 9x^2) / 3x = (18x^3 / 3x) + (9x^2 / 3x).

    • 8

      Understand how to divide by a term. If you are dividing a higher order term by a lower order term, you subtract the exponent. For example, y^3/y = y^2. The number part of each term is handled like any other division problem. For example, 20z / 4 = 5z.

    • 9

      Divide each term in the binomial by the divisor; (18x^3 / 3x) + (9x^2 / 3x) = 6x^2 + 3x.

May 10, 2014 | Educational & Reference Software

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What can constitutes a rational expression


Haha it's not an expression which shows you are not crazy.

It is a fractional formula in which the top and bottom line are algebraic polynomials, whether low order (like x + 1) or higher order (like 4x^3 + 8x^2 - 7x + 5). See here

http://tutorial.math.lamar.edu/Classes/Alg/RationalExpressions.aspx

Apr 01, 2014 | Mathsoft StudyWorks! Mathematics Deluxe...

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What is the answer to 10x minus 3x equals 20 plus 1 equals what


joshua,

X = 3 (answer)

Here are the solution steps:

10x minus 3x equals 20 plus 1

10X minus 3X is 7X (right?)
20 plus 1 is 21 (right?)
therefore:

7X = 21

now divide both sides of the equals sign by 7

7X divided by 7 equals 21 divided by 7

7X / 7 = 21/7

X = 3 (answer)

More math? Ask for Gort007
Thanks for trusting FixYa !

Sep 14, 2010 | Mathsoft StudyWorks! Mathematics Deluxe...

1 Answer

(5x-15)+(3x+5)=180 angle a = (5x-15) degrees (obtuse) angle b = (3x+5) degrees (acute) both angles are supplementary to each other equaling 180 solving for x


Solve for x
5x+3x+(-15) + 5 becomes 8x-10=180
move 10 from left to right and you get8x190
8x = 190
x = 23.75
so the first angle is (5*23.75)-15 = 103.75
and the second angle is (3*23.75) +5 = 76.25

check by adding 76.25+103.75 = 180

Make sense? I love math, let me know it you need more help



Mar 06, 2010 | SuperTutor Homeworkhelp.Com Super Tutor...

1 Answer

How to solve (4+x) (5-x)/(2+x) (7-x)=1


(4+x)(5-x)=(2+x)(7-x)
20-4x+5x-x^2=14-2x+7x-x^2
20+x=14+5x
20-14=4x
x=3/2:ans;

Oct 21, 2009 | SoftMath Algebrator - Algebra Homework...

2 Answers

Age problem


X+X+28=4(X+X)
2X+28=4X+4X
28=8X-2X
28=6X
X=4

The twins are 4 yrs. old. The mother is 32.

Do I pass?

Apr 21, 2009 | Mathsoft StudyWorks! Mathematics Deluxe...

1 Answer

7x-3+3x=-53 what is the value of 4x+9


7x-3 + 3x = -53
7x + 3x - 3 = -53
10x - 3 = -53
10x = -53 + 3
10x = -50
x = -5
Therefore 4x + 9 is equal to 4 times (-5) plus 9
-20 + 9 equals -11

Dec 17, 2008 | SoftMath Algebrator - Algebra Homework...

3 Answers

Solving systems of equations by elimination


Hi joanmae jmeh;

You can add these equations just like you would numbers

3x + 2y = 7
5x - 2y = 1
-----------------------
8x =8
x=1
Now plug x = 1 back into either equation and you can solve for y
Y = 2

When you add the 2 equations together the +2y and the -2y cancel
out

Hope this helps Loringh Please leave a rating for me Thks

Dec 01, 2008 | Bagatrix Algebra Solved! 2005 (105101) for...

1 Answer

Report a bug


the exact equation is
15x^2 - 21x - 18
=3(5x^2 - 7x - 6)
=3{5x^2 -(10-3)x -6 }
=3{5x^2 - 10x + 3x -6}
=3{5x(x - 2) + 3(x-2)}
=3(x-2)(5x+3) these are the factors

Thanks

Zulfikar Ali
ali_zulfikar@yahoo.com
9899780221

Oct 16, 2008 | SoftMath Algebrator - Algebra Homework...

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