Factor -7x^3+21x^2+3x-9 by grouping. what is the resulting expression?
a) (3-7x)(x^2-3)
b) (7x-3)(3-x^2)
c) (3-7x^2)(x-3)
d) (7x^2-3)(3+x)

c) (3-7x^2)(x-3)

Step-by-step explanation:

-7x^3+21x^2+3x-9

Factor out a -7x^2 from the first two terms and a 3 from the last two terms

-7x^2 (x -3) +3(x-3)

Now factor out (x-3)

(x-3) (-7x^2+3)

Rearranging)

(x-3) (3-7x^2)

312312

step-by-step explanation:

see below

step-by-step explanation:

x+2> 6

subtract 2 from each side

x+2-2 > 6-2

x > 4

there is an open circle at 4 since is it is greater than and the line goes to the right