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Math

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expand and simplify

1. -(y^2-4y+7)(3y^2-5y-3)

2.2(a+b^3

  • Math - ,

    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.

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