What is the standard form of $y=(-x - 1) (3x - 2) (4x + 1)$ ?

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Answer 1 · 2016-02-03T15:00:27

$y=(-x-1)(3x-2)(4x+1)$

First multiply the two binomials using FOIL method:

$ulF$ irsts
$ulO$ utsides
$ulI$ nsides
$ulL$ asts

So,

$rarr(-x-1)(3x-2)=-3x^2+2x-3x+2=(-3x^2-x+2)$

Now multiply:

$(-3x^2-x+2)(4x+1)$

Use the distributive law and multiply:

$rarry=-12x^3-7x^2+7x+2$

What is the standard form of y=(-x - 1) (3x - 2) (4x + 1) y=(-x - 1) (3x - 2) (4x + 1) ?