(x-9)(x-10) multiplying binomials

x^2-19x+90

Step-by-step explanation:

For multiplying binomials, what you have to do is multiply the two terms from first set with both terms from the second set. For example, in this situation, you take x and multiply it with both x and -10, and then you take -9 and multiply it with both x and -10. You will end up with x^2-10x-9x+90. Finally, you have to combine the like terms and you would end up with x^2-19x+90.

x^2 -19x + 90

Step-by-step explanation:

FOIL (first, outside, inside, last)

First - (x) (x) = x^2

Outside - (x) (-10) = -10x

Inside - (-9) (x) = -9x

Last - (-9) (-10) = 90

x^2 - 10x - 9x + 90

*simplify*

x^2 -19x + 90