Question about Texas Instruments TI-30XA Calculator

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I need the EXACT solution for -7 + square root of 61 divided by 2. I have a Ti-30XA calculator and I don't know how to do this.

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Joe2

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It is unclear whether your equation is:

a: ((SQRT61) - 7) / 2
or
b: ((SQRT61) / 2) - 7

For a:
Type 61 SQRT.
Subtract 7.
Equals.
Divide by 2.
Equals. (Should be 0.4051248...)


For b:
Type 61 then SQRT.
Then divide by 2.
Equals.
Then subtract 7.
Equals. (Should be -3.094875...)

Good luck.

Posted on Apr 15, 2011

  • Joe2
    Joe2 Apr 15, 2011

    It could even be c: (SQRT(61 / 2)) - 7 which is -1.47731949...

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