The coefficient of x7 in the expansion o...

The coefficient of x7 in the expansion of `(1""-""x""-""x^2+""x^3)^6` is : (1) 144 (2) `-132` (3) `-144` (4) 132

The coefficient of x7 in the expansion of (1""-""x""-""x^2+""x^3)^6 is...
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The coefficient of x7 in the expansion of (1""-""x""-""x^2+""x^3)^6 is...
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In the expansion of (1+3x+2x^2)^6 , the coefficient of x^(11) is a. 1...
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The coefficient x^(6) in the expansion (1+x^(2)-x^(3))^(8) is
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The coefficient of x^(6) in the expansion of (1+x+x^(2))^(-3), is
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Find the coefficients of x^4 in the expansion of (1+x+x^2)^3
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{:(144,(132),121),(64,(?),100):}
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(x+2)(x-5)(x-6)(x+1)=144:
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The coefficient of x^(4) in the expansion of (1 + x + x^(2))^(3) is
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