I need help doing the works. I already know the answers I just need to know how to get there

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I need help doing the works. I already know the answers I just need to know how to get there

I Need Help Doing The Works I Already Know The Answers I Just Need To Know How To Get There 1 (18.63 KiB) Viewed 29 times

I Need Help Doing The Works I Already Know The Answers I Just Need To Know How To Get There 2 (12.41 KiB) Viewed 29 times

Using only the Second Derivative Test, find the coordinates of the relative extrema for the given function. [3.4] 16) f(x)=2x+- 10 x 8(x)=x²-x²-3x² 17) 18) h(x)= (3x-1)²

Answers 16) f has a relative maximum at (-√5,-4√5) and a relative minimum at (√5,4√5) 17) g has a relative maximum at (0,0) and relative minima at (₁0) 18) h has a relative minimum at but no relative maximum and 3, 45