math

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i cant seem to get the answer that the teacher gave us which is 5y^2-11y

The problem is simplify:
2y^2-y[3-2(y-4)-y]

how did he get that answer?

  • math -

    2y^2-y(3-2(y-4)-y)

    Get rid of the inner brackets:

    2y^2 - y(3 - 2y + 8 -y)

    Multiply the y into the brackets:

    2y^2 - (3y - 2y^2 + 8y - y^2)

    2y^2 - 3y + 2y^2 - 8y + y^2

    Now collect the terms together.

  • math -

    Thanks

  • math -

    You're welcome!

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