Question 531695
-7=x^2-8x
x^2-8x=-7
x^2-8x +7 = 0
(x-1)(x-7) = 0
x = 1 or 7
{{{ graph(500,500,-10,10,-10,10,x^2-8*x+7) }}}
.
10 = 2x^2+5x+13
2x^2+5x+13=10
2x^2 +5x +3 = 0
(2x+3)(x+1) = 0
x = -1 or -3/2

{{{ graph(500,500,-3,3,-3,3,2*x^2+5*x+3) }}}