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simplify (3x^2-5x+4)-(5x^2+7x-7)

  • trig -

    Combine similar terms. For example, the two "x^2" terms combine to give
    3x^2 -5x^2 = -2x^2

    You can also combine the two 'x' terms, to get one 'x' term and the two constants also.

    Don't forget that the "-" in front of
    (5x^2+7x-7) changes the sign of every term inside the parentheses, before you combine similar terms.

    You should end up with
    -2x^2 -12x +11

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