Answer:
17)x=12, -7
18)x=+2, -2
19)(2x-5)(3x+1)
20)3(5x+4)(x-2)
Step-by-step explanation:
17) (x-12)(x+7)=0
x=12, -7
18)3x^2-12=0
3x^2=12
x^2=4
x=+2, -2
19)(ax+b)(cx+d)
Ax^2+Bx+C
A=6, B=-13, C=-5
ac=6
ad+bc=-13
bd=-5
a=2
b=-5
c=3
d=1
(2x-5)(3x+1)
20)3(5x^2-6x-8)
=3(5x+4)(x-2)
Hope I helped! And also, is this really college math? I'm in middle school and I know how to do it!
Can you give me brainliest, since I did all of them?
