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

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Answer 1 · 2018-05-29T12:11:07

$color(maroon)(y = 27x^3 + 104x^2 + 24x + 55$ is the standard form.

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

$color(crimson)((a + b)^3 = a^3 + b^3 + 3a^2b + 3ab^2$ , identity

$color(purple)((x + y)^2 = x-^2 + 2xy + y^2$ , identity

$y = 27x^3 + 64 + 108x^2 + 48x - 4x^2 - 24x - 9$

$color(maroon)(y = 27x^3 + 104x^2 + 24x + 55$ is the standard form.

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