pseudonymjane pseudonymjane

10-01-2015
Mathematics

Answered

Expand (4x+0.9)^2.

Thanks!:))

Verified Answer :

konrad509 konrad509

10-01-2015

\((4x+0.9)^2=(4x)^2+2\cdot4x\cdot0.9+0.9^2=16x^2+7.2x+0.81\)

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