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4. Find the coefficient of x3 in the expansion of (2 + x)6(4 - x)3​

Sagot :

Salomerailoaidn

Answer:

-12

Step-by-step explanation:

6(4-x)^3=6(-x^3 + 64)

=(-6x^3 + 384)×(2+x)

=-12x^3 + -6x^4 +768 +384x

coefficient= -12

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