Answer:
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.
Answer:
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
