Question

. The number of terms in the expansion or (1 + x)" is

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Answer 1

Answer:

a square + 2 ab + b square

now the expansion of a + b:-

a square + twice a b + b square

so we make this answer successful by this method.

now we do like that:-

1square +2×1×x+×square

and the answer is :-

1 +2x +x square.

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