Question

Factor out the greatest common monomial: 12x^3 + 15x^2 - 21x
A. x(12x^2 + 15x - 21)
B. 3(4x^3 + 5x^2 - 7x)
C. 3x(4x^2 + 5x - 7)
D. 3x(4x^3 + 5x^2 - 7x)

Answer 1

what does the leading coefficient for all x variables have in common?
try to factor out the greatest common denominator

Answer 2

\[x^3+2x^2+10x\]
\[x(x^2=2x+10)\]
here an examples to look at

Answer 3

D?

Answer 4

remember you already factored out a x, so that you would need to be a degree lower for all x values in the brackets

Answer 5

Its C