Question

How do you multiply `(2x - 5)(x - 9)`?

Answer 1

`=2x^2-23x+45`

Explanation:

`color(blue)((2x−5))(x−9)`

`=color(blue)((2x)) * (x) +color(blue)((2x)) * (-9) +color(blue)((-5)) *(x)−color(blue)((5)).(-9)`

`=2x^2 -18x-5x+45`

`=2x^2-23x+45`