Question 1135258


Solve:

{{{100x^2+700x-26000 =0}}}.......simplify, divide by {{{100}}}

{{{x^2+7x-260 =0}}}......factor

{{{x^2+20x-13x-260 =0}}}

{{{(x^2+20x)-(13x+260) =0}}}

{{{x(x+20)-13(x+20) =0}}}

{{{(x - 13) (x + 20) = 0}}}


solutions:

{{{x = 13}}}
{{{ x  = -20}}}