Question

Use the formula to multiply:

(5) (y – 8) (y + 6)

Answer 1

As (x + a) (x + b) = x² + (a + b)x + ab
So, (y – 8) (y + 6) = y² + (–8 + 6)y – 48
= y² – 2y – 48

∴ (y – 8) (y + 6) = y² – 2y – 48