Question

Solve for y: (y+3) (y-3) = y(y+5) + 6.

Answer 1

(y+3) (y-3) = y(y+5) + 6

y² - 9 = y² + 5y + 6

5y = -15

y = -3

Answer 2

Answer:

y=-3

Step-by-step explanation:

(y+3)(y-3)=y(y+5)+6

Since (a+b)(a-b)=a^2-b^2. so

y^2-9=y^2+5y+6

y^2-9-y^2-5y-6=0

-5y-15=0

-5y=15

5y=-15

y=-15/5

y=-3