Answer:
Step-by-step 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)
