Question

Question #714be

Answer 1

`y^2+y-20`

Explanation:

Given`" "color(blue)((y+5)color(green)((y-4))`

Multiply everything in the second bracket by everything in the first.

`color(green)(color(blue)(y)(y-4) color(blue)(" "+" "5)(y-4))`

`y^2-4y" "+" "5y-20`

`y^2+y-20`