# Algebra

Can I get help with these two? I cant figure them out.

What is the vertex form of the equation?
y = - x2 +8x – 12

Simplify the expression.
(-6i)2

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3. 11
1. f(x)=- x2 +8x – 12 =-(x^2-8x+16)+4
= -(x-4)^2 +4

on the second, I assume you meant
(-6i)2
(-1^2 * 6^2 * i^2)=-36

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posted by bobpursley
2. Thank you

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posted by |-/

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