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If x^2 = 40, what is the value of x? ±80 ±20 plus or minus square root 80 plus or minus square root 40

User Cojack
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1 Answer

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Answer:

Explanation:

x^2 = 40

To find the value of x you must take the square root of both x^2 and 40.

When you do, you get

sqrt(x^2) = sqrt(40)

Answer x = + sqrt(40)

Simplification

x = + sqrt(2 * 2 * 2 * 5)

The square root of 2 equal primes is one of them. That root can be shown outside the root sign.

x = + 2*sqrt( 2 * 5)

User Artur Keyan
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