Question

How do you write `y=-3(x-3)(x+2)` in standard form?

Answer 1

`y = -3x^2+3x+18`

Explanation:

Standard form for a quadratic (in variables `x` and `y`) is
`color(white)("XXXX")` `y = ax^2+bx+c`

`y=-3(x-3)(x+2)`
can be converted into "standard form" by multiplying the factors on the right side:

`y = (-3)(x^2-x-6)`

`y = -3x^2+3x+18`