Question

How do you solve `2( 3- y ) ^ { 2} = 18`?

Answer 1

`{0;6}`

Explanation:

`2*(3−y)^2=18 <=> (3-y)^2 = 18/2`

`<=> (3-y)^2 = 9`

`<=> 3-y = 3` or `3-y = -3`

`<=> y=0` or `y = 6`