Question 170710
Given: {{{x=3}}} & {{{x=-5}}}
It follows ----------> {{{(x-3)(x+5)=0}}}
Then expand, {{{x^2-3x+5x-15=0}}}
{{{highlight(x^2+2x-15=0)}}}, ANSWER
See graph:
{{{drawing(400,400,-7,7,-20,7,grid(1),graph(400,400,-7,7,-20,7,x^2+2x-15))}}}------> See it passes thru points (3,0) & (-5,0)
.
Thank you,
Jojo