Hi everyone!

I know this is probably a pretty easy question but I'm having a mental block at the minute...

Anyway the question is: "Show that the curves C1 and C2 intersect at the points (-2,16) and (1,7)"

C1 : y= -x^2 - 4x +12

C2 : y= 5x^2 + 2x

N.B. I'm new to the forums and wasn't sure how to write "squared" so in case I got it wrong "^2" = squared

Thanks in advance! ;)