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OpenStudy (anonymous):
Simplify: (3x2 - 3 + 9x3) - (4x3 - 2x2 + 16)
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OpenStudy (campbell_st):
well remove the backets and you get \[3x^2 - 2 + 9x^3 - 4x^3 +2x^2 - 16\] now collect the like terms.
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