Question

How do you simplify `12c^2d+3c(cd)-4d`?

Answer 1

`12c^2d+3c(cd) -4d=d(15c^2-4)`

Explanation:

`12c^2d+3c(cd) -4d`
`color(white)("XXXX")`Multiply the middle term
`=12c^2d+3c^d-4d`
`color(white)("XXXX")`Combine the first two terms
`=15c^2d-4d`
`color(white)("XXXX")`Extract the common of `d`
`=d(15c^2-4)`