Question

What is the standard form of `y= (5x+2)^2 + 11x(5x+2)+30`?

Answer 1

`y = 80x^2 +32x +30`

Explanation:

To get the expression into standard form, expand it to get rid of all the brackets, then add like terms and order in descending order of powers.
`y = (5x+2)^2 +11x(5x+2) +30`
`y = 25x^2 +10x + 2 +55x^2 +22x +30`
`y = 80x^2 +32x +30`