Yes ok doubling dimensions
X^2+2x+3+2(x^2+2x+3)+3+4(x^2+2x+3)+6+8(x^2+2x+3)+9+16(<span>x^2+2x+3)+12
add that up and you will get your answer and you get </span><span>31x²+62x+123</span>
Step-by-step explanation:
M(8.-2), M'(x,y) ,
=(-5,1)

--> x - 8 = -5 --> x= 3
---> y+2 = 1 --> y =-1
so M'(3,-1) and its reflection y-axis is (-3,-1)