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What are the solutions of the equation x^2+15=79?

User Michael Kenzel
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1 Answer

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10 votes

Answers: x = 8 and x = -8

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Work Shown:

x^2 + 15 = 79

x^2 = 79-15

x^2 = 64

x = sqrt(64) or x = -sqrt(64)

x = 8 or x = -8

As the steps above show, we first subtract 15 from both sides. Then we apply the square root to get the two results. Don't forget about the plus minus.

User Lorenzo Conserva
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