Question

Solve y^2= 49 , where y is a real number
Simplify your answer as much as possible

Answer 1

y = +7 or -7

Explanation:

y^2 = 49

square rooting both sides

y = √49

y = +7 or -7

Answer 2

`{y}^(2) = 49`

Move the square to the right-hand side and convert it to underoot

`y = √(49)`

Calculate the root of 49

`y = 7 \:or -7`