2 numbers sum is 7 product is -18
x+y=7x•y=-18x+y=7x=7-yx•y=-18(7-y)•y=-187y-y^2=-18-y^2+7y+18=0Y^2-7y-18=0(y-9)(y+2)=0y is either 9 or -2x+y=7x=7-yX=7-9X=-2X•y=-189•(-2)=-18-18=-18There you go, y is 9 and x is -2
