<span>y=x^2+5x+6
y=4x+12
Solution = (-3,0) and (2,20)
</span><span>y=x^2-3x-1
y=8x-1
Solution = (0,-1) and (11,87)</span>
I haven't done this in a while but I think the answer is 16
Answer:

multiply x through out:

factorise out x²:

take square root on both sides:

The solution is x<5
so
C,E,F, and G