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

1 Answer
Jun 14, 2018

y=9x^2+8x+4

Explanation:

"the standard form of a quadratic is"

•color(white)(x)y=ax^2+bx+c ;a!=0

"expand "(3x+2)^2" using FOIL"

y=9x^2+12x+4-4x

color(white)(y)=9x^2+8x+4larrcolor(blue)"in standard form"