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Question

use pascal's triangle to expand the expression

(2x-3y)^3
10 years ago

Answers

Steve
the coefficients are 1,3,3,1 so you have

1(2x)^3(-3y)^0 + 3(2x)^2(-3y)^1 + 3(2x)^1(-3y)^2 + 1(2x)^0(-3y)^3

= 8x^3 - 36x^2y + 54xy^2 - 27y^3
10 years ago
richard
thank you
10 years ago

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