coefficients...

Algebra Level 2

What is the sum of the coefficients in the expansion ( x + y ) 10 (x+y)^{10} ?

NOTE : x , y x,y both are the variables here.


The answer is 1024.

Ma.Lourdes Rogales by ma.lourdes rogales , 22, Philippines

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2 solutions

Substitute 1 1 to each of the variables, we have

( 1 + 1 ) 10 = 2 10 = 1024 (1+1)^{10}=2^{10}=1024

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Justin Tuazon
Dec 18, 2014

Add the numbers in the 11th row of pascal's triangle

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