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05-01-2018
Mathematics

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-x^(2)-12=-87

Please explain your answer, and how I make the x positive

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zrh2sfo zrh2sfo

06-01-2018

Solve for x over the real numbers:
-x^2 - 12 = -87
Add 12 to both sides:
-x^2 = -75
Multiply both sides by -1:
x^2 = 75
Take the square root of both sides:
Answer: x = 5 sqrt(3) or x = -5 sqrt(3) both Answers are correct

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