Question 39964
sqrt(2y+7) + 4 = y
sqrt(2y+7)=y-4
Square both sides to get:
2y+7=y^2-8y+16
y^2-10y+9=0
(y-9(y-1)=0
y=9 or y=1
Check the answers in the original equation.
y=1 is extraneous.
Cheers,
Stan H.