(c) Find its maximum or minimum value.

Thank you for the opportunity to help you with your question!

differentiate once

16x-16=0

factor

16(x-1)=0

x-1=0

x=1

so maximum or minimum is = 1

the answer is not 1 can you please try to answer what is the standard form of the equation

do you mean the answer is wrong for part c?

yes part c is incorrect

wait for while

8(x^2-2x+1/8)

8((x-1)^2-1+1/8)

f(x)=8{(x-1)-7/8}

x minimum is= -7

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