How do you write in standard form y = (x - 1)(5x + 2)?

1 Answer
Alan P.
Jun 24, 2015

Standard form: y=5x^2-3x-2

Explanation:

Standard form for a quadratic is
color(white)("XXXX")y =ax^2+bx+c for constants a, b, and c

Multiplying (color(red)(x)color(blue)(-1))(5x+2)
as color(red)((x))(5x+2)color(blue)( - 1)(5x+2)
= color(red)(5x^2+2x)color(blue)( - 5x -2)
=5x^2-3x-2
allows us to rewrite the equation in this standard form.

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