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Mathematics 8 Online
OpenStudy (anonymous):

(x^9+2x)(x^9-2x) multiply

OpenStudy (anonymous):

x^18-4x^2

OpenStudy (anonymous):

x^18-4x^2

OpenStudy (anonymous):

x^81-4x^2

OpenStudy (anonymous):

sorry dheeraj is wrong.

OpenStudy (anonymous):

(x^9)^2=x^(9+9) not x^(9*9)

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