Question

Given y = (2x + 3)2, what is the standard form of the given quadratic equation.

Answer 1

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

Explanation:

Perform the square of the binomial, combine like terms, and then write the remaining expression in decreasing order of powers of x:

`y=(2x+3)^2\\y=(2x+3)\,(2x+3)\\y=4x^2+6x+6x+9\\y=4x^2+12x+9`