Question 1076226
2(x+3)²-8=2(x²+6x+9)-8
=2x²+12x+18-8=2x²+12x+10
So y=2x²+12x+10
And:
y=x²+3x-18
y=(x+6)(x-3)
&#9786;&#9786;&#9786;&#9786;