How do you factor $7x+28x^2-35x^3$ ?

Question

1625 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-02-16T11:46:45

$-7x(5x+1)(x-1)$

$7x+28x^2-35x^3$ => factor GCF:

Note that dividing by $-7x$ makes a positive $x^2$ term.

$-7x(5x^2-4x-1)$
$-7x(5x^2-5x+x-1)$
$-7x[5x(x-1)+(x-1)]$
$-7x(x-1)(5x+1)$

How do you factor 7x+28x^2-35x^37x+28x^2-35x^3?