Question

If x to the 2nd power =20 what is the value of x

Answer 1

4.47 and -4.47 ( to nearest hundredth)

Explanation:

x^2 = 20

x = +/- sqrt 20

= +/- sqrt 4* 5

= +/- 2 sqrt5

= +/- 4.47 to nearest hundredth

Answer 2

x= 4.47213595 Is the answer to the question just round to the nearest 10th