Question

what value is the maximum or minimum ?
1. y= 3+3x-2x^2
2. y = x^2-2x
3. y = 7-2x-x^2
4. y = 2x^2+x-1

Answer 1

How do we get to find out? I'm guessing we need to recognize these as parabolas and find the vertex? You'll have to tell me. Do we get to use the calculus? Your call!

Answer 2

i think i know how to do this now :3