AM-43

Binomial expansion

A Math · Secondary 3 · Easy · Binomial expansion

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(1-2x)^4

using the binomial theorem and choose the correct expression.

$1-8x+24x^2-32x^3+16x^4$
$1+8x+24x^2+32x^3+16x^4$
$1-8x+16x^2-8x^3+x^4$
$1-4x+6x^2-4x^3+x^4$

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