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

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Answer 1 · 2017-01-25T22:54:58

$y = 2x^2 + 5x - 12$

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

We can write it as follows:

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

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

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

$2x^2 + 8x - 3x - 12 = y$

$2x^2 + 5x - 12 = y$ .Now, the equation is in its standard form.

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