Question 162457
Factor by grouping:
{{{7x^3+2x^2-14x-4}}} Group as follows:
{{{(7x^3+2x^2)-(14x+4)}}} Note the change of sign on the last term! Now factor {{{x^2}}} from the first group and {{{2}}} from the second group.
{{{x^2(7x+2)-2(7x+2)}}} Factor the common term ({{{7x+2}}})
{{{(7x+2)(x^2-2)}}}