What is the function for `y=-3(x-1)^2 + 3`?

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`y=-3(x-1)^2 + 3`

multiply `(x-1)^2`

`y=-3(x^2-2x+1)+3`

distribute -3

`y=-3x^2 + 6x - 3 + 3`

combine like terms, answer is:

`y=-3x^2+6x`

or factored answer is

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

which makes choice "d" correct as both b and c work

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