English, asked by verlekardharti, 2 months ago

evaluate 81³ using identities

Answers

Answered by asma1605

1

Answer:

531,685.

Explanation:

(81)^3

=(81+1)^3

=(81)^3+3×81×1+(1)^3

(using, (a+b)^2=a^2+2ab+b^2)

=531,441+243+1

=531,685.

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