WHERE YOU WOULD USE NEGATIVE NUMBERS IN REAL LIFE?

It is not possible to take the logarithm of a negative number because the logarithm function is defined only for positive real numbers. If you are trying to take the logarithm of a negative number, you will encounter a "domain error" because the input is outside the domain of the function.
To fix this error, you will need to make sure that the input to the logarithm function is a positive real number. One way to do this is to add a condition to your code to check whether the input is positive before taking the logarithm. For example:

if x > 0:
y = log(x)
else:
print("Error: Cannot take log of non-positive number")

Alternatively, you can use the logarithm function from a library that supports complex numbers, such as the cmath library in Python, which import cmath
x = -1
y = cmath.log(x)
print(y) # Output: (-3.141592653589793j)
allows you to take the logarithm of negative numbers by using the complex logarithm function log(). For example:

Keep in mind that the complex logarithm function returns a complex number, so you may need to handle the result differently than you would with a real logarithm.

a negative number is any number less than zero. for example if you subtract 4 form 3 you get -1 which is negative one.

There are an infinite number of numbers between -7 and +7 inclusive, so I can't possibly list all of them.

The opposite of any number (be it integer, rational, or real) is the same number preceded by the negative sign.
Example : the opposite of a is -a (read it a negative a)
opposite of (-b) is -(-b)=b
A rational number is a number that can be written as a fraction. You should note that the set of rational numbers contains the set of all integers .
The opposite of 15/37 is -(15/37) which is equivalent to (-15)/37 and 15/(-37).

The opposite of any number (be it integer, rational, or real) is the same number preceded by the negative sign.
Example : the opposite of a is -a (read it a negative a)
opposite of (-b) is -(-b)=b
A rational number is a number that can be written as a fraction. You should note that the set of rational numbers contains the set of all integers .
The opposite of 15/37 is -(15/37) which is equivalent to (-15)/37 and 15/(-37).

The square root is the second function of the "3" key. To calculate the square root of 3, press 3 2ndF 3 =

Real Numbers are just numbers like: 1 12.38 -0.8625 3/4 ?2 1998 In fact:

Nearly any number you can think of is a Real Number
Real Numbers include: Whole Numbers (like 1,2,3,4, etc) Rational Numbers (like 3/4, 0.125, 0.333..., 1.1, etc ) Irrational Numbers (like ?, ?3, etc )

Real Numbers can also be positive, negative or zero.
So ... what is NOT a Real Number? ?-1 (the square root of minus 1) is not a Real Number, it is an Imaginary Number Infinity is not a Real Number And there are also some special numbers that mathematicians play with that are not Real Numbers
Why are they called "Real" Numbers?

Because they are not Imaginary Numbers.
The Real Numbers did not have a name before Imaginary Numbers were thought of. They got called "Real" because they were not Imaginary. That is the actual answer!
The Real Number Line The Real Number Line is like an actual geometric line.
A point is chosen on the line to be the "origin", points to the right will be positive, and points to the left will be negative.

A distance is chosen to be "1", and the whole numbers can then be marked off: {1,2,3,...), and also in the negative direction: {-1,-2,-3, ...}
Any point on the line is a Real Number:

• The numbers could be rational (like 20/9)
• or irrational (like ?)

But you won't find Infinity, or an Imaginary Number.
Real does not mean they are in the real world They are not called "Real" because they show the value of something real.
In mathematics we like our numbers pure, if we write 0.5 we mean exactly half, but in the real world half may not be exact (try cutting an apple exactly in half).

The square root of a negative number does not exist in lR, the set of real numbers.
In the set of Complex numbers the square root of -49/64 is (7/8)i, where i is the imaginary unit defined by i^2=-1.

"Is there anything that I can do about this to stop my answers being complex numbers when solving cubic equations?"
You are making an assumption that is unwarranted.Namely that a cubic equation must necessarily have 3 real roots. This is not the case.

Let your equation be

If coefficients are complex you should expect some complex roots. Right?
If the coefficients are REAL then depending on the discriminant

you can have three cases
DELTA positive : three distinct real roots
DELTA=0 , the equation has a multiple root and all roots are REAL
DELTA negative: the equation has ONE real root and 2 complex roots that are complex conjugate of each other.

It suffices to look at the Tartaglia/Cardano expressions of the roots to know that more often than not there is going to be complex roots.