Question

If x powered by 2= 20 what is the value of x ?

Answer 1

Answer:

x = 10

Step-by-step explanation:

10^2= 20, therefore

X=10

Answer 2

Answer:

x = ± 2$\sqrt{5}$

Step-by-step explanation:

Given

x² = 20 ( take the square root of both sides )

x = ± $\sqrt{20}$ = ± $\sqrt{4(5)}$ = ±  $\sqrt{4}$ × $\sqrt{5}$ = ± 2$\sqrt{5}$