Answer:
15x^2-32x+9
Step-by-step explanation:
(3x – 1)(5x – 9)
FOIL
first: 3x*5x= 15x^2
outer: 3x(-9) = -27x
inner: -1(5x) = -5x
last: -1(-9) = 9
Add them together
15x^2 -27x-5x +9
Combine terms
15x^2-32x+9
Answer:
for x < 0 x^2 - 2
for x
0 2x + 1
Step-by-step explanation:
(x-9) (x+2)=x²+2x-9x-18=x²-7x-18