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OpenStudy (anonymous):
Multiply and simplify. q^7*q*q^-9*q^-3 some one help!
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OpenStudy (dangerousjesse):
Combine your powers `7+1-3-9`
OpenStudy (anonymous):
thanks
OpenStudy (anonymous):
what about this one Which of the following expressions is not equal to 81x^3y^5
OpenStudy (dangerousjesse):
Your choices?
OpenStudy (anonymous):
a. 3^2xy^2*3^2x^2y^3 b. 3xy(27xy)xy^3 c. 3^3x^3*3^2y^5 d. 3^4*x^5*y^2*x^-2y^3
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