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Find the constant term in the binomial expansion of \((2x - ...

Find the constant term in the binomial expansion of (2x3x)8.

A.

90720

B.

1296

C.

1120

D.

672

Correct answer is A

(x)n(x1)8n=x0

xn.x8+n=x0n8+n=0

2n8=0n=4

Constant term = 8C4(24)(34)=70×16×81

= 90720