Question

solve the following quadratic equation by factorisation 1/4(y+5)^2=9​

Answer 1

1/4(y+5)² = 9

(y+5)² = 9*4 = 36

y² + 10x + 25 - 36 = 0

y² + 10x - 11 = 0

(y + 11) (y - 1) = 0

y = -11 or y = 1