Question 1178157


{{{x^2+bx+c=0 }}}

has the roots {{{x[1]=-7}}} and {{{x[2]=10}}}

use The Product Property of Square Roots 

{{{(x-x[1])(x-x[1])=0}}}

{{{(x-(-7))(x-10)=0}}}

{{{(x+7)(x-10)=0}}}

{{{x^2 - 3x - 70=0}}}