Binomial Expansion

Algebra Level 5

Compute x 4 + 4 x 3 y + 6 x 2 y 2 + 4 x y 2 + y 4 x^4+4x^3y+6x^2y^2+4xy^2+y^4 for x = 13 x=13 , y = 7 y=7 .

80000 1600000 400 8000 160000 None

Alex Li by Alex Li , 22, USA

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1 solution

Alex Li
Jun 25, 2015

Note that the exponent of y y in the fourth term is 2 rather than 3. It is easy to verify that the answer is not listed.

5 Helpful 0 Interesting 0 Brilliant 0 Confused

Damn! Didn't notice it..was deceived by the name of the question..

Anik Mandal - 5 years, 9 months ago

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