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OpenStudy (anonymous):
Simplify this expression. 3x2(7x2 - 9)
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OpenStudy (highschoolmom2010):
21x^4-27x^2 distribute 3x^2 to 7x^2-9 :DD
OpenStudy (highschoolmom2010):
and add exponents together ^^
OpenStudy (anonymous):
thanks
OpenStudy (highschoolmom2010):
no problem :DD
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