Question 490548
Factor completely:
{{{-6x^6-30x^5+84x^4}}} Rewrite this as:
{{{-(6x^4)(x^2)-(6x^4)(5x)+(6x^4)(14)}}} Now factor the common factor of {{{-6x^4}}} and you'll get:
{{{-6x^4(x^2+5x-14)}}}  Notice the sign changes inside the parentheses.  Now factor the quadratic expression in the parentheses.
{{{highlight(-6x^4(x+7)(x-2))}}}