How do you write the function in standard form $y=8(x+7)^2-20$ ?

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Answer 1 · 2018-01-28T00:40:03

$8x^2+112x+372$

We want our final form to be $ax^2+bx+c$

Let's expand this:

$8(x+7)(x+7)-20$

$8(x^2+14x+49)-20$

distribute the $8$

$8x^2+112x+392-20$

$8x^2+112x+372$

How do you write the function in standard form y=8(x+7)^2-20y=8(x+7)^2-20?