Question

Make x the subject:
y= (x+10)^2​

Answer 1

y= (x+10)^2
Root both sides
±√y=x+10
-10
x= ±√y -10

Answer 2

x = - 10 ±
`√(y)`

Explanation:

y = (x + 10)² , or

(x + 10)² = y ( take square root of both sides )

x + 10 = ±
`√(y)` ( subtract 10 from both sides )

x = - 10 ±
`√(y)`