What is the difference? 2x+5 3x+5 X+ 1
x² – 3x x - x x²-g
(x+5)(x+2)
x² - gx
(x+5)(x+4)
x² - gx
- 2x + 11
X² - 122-9
3(x+2)
x²-3x

you'll just earn points here

step-by-step explanation:

b, i believe, but not sure.

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.