Question

Re-write the quadratic function below in Standard Form
y = -9(x + 1)(x – 7)

Answer 1

y=-9(x^2-7x+x-7)
y=-9(x^2-6x-7)
y=-9x^2+6x+63

Answer 2

y=-9x²+54x+63

Explanation:

y=-9(x²-7x+x-7)

y= -9(x²-6x-7)

y=-9x²+54x+63