Math
posted by Melissa on .
expand and simplify
1. (y^24y+7)(3y^25y3)
2.2(a+b^3

1. (y^2  4y + 7)(3y^2 5y 3) =
3y^4 + 5y^3 + 3y^2 + 12y^3  20Y^2 12y 21Y^2 + 35Y + 21 =
3Y^4 + 17Y^3  38Y^2 + 23Y + 21 =
2. 2(a + b^3) = 2a + 2b^3. This one was already simplified.