Exercise 8

Simplify each expression, if possible, by combining like terms.

  1. \({6x^{2}-4s^{2}+7s^{2}}\)

  2. \({2s^{2}+2y^{2}-7+7y}\)

  3. \({-3y^{2}+6z+8z}\)

  4. \({-4s-2x-8s^{2}+2s^{2}}\)

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