What is the standard form of $y= 3x(x+2)-(x+4)^2$ ?

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Answer 1 · 2017-11-01T11:42:37

$y=2x^2-2x-16$

$y=3x(x+2)-(x+4)^2$

$y=3x^2+6x-(x^2+8x+16)$

$y=3x^2+6x-x^2-8x-16$

$y=2x^2-2x-16$

What is the standard form of y= 3x(x+2)-(x+4)^2 y= 3x(x+2)-(x+4)^2 ?