﻿ Coefficients of x11 in the expansion of (2x2 + x – 3)6 is : Kaysons Education

# Coefficients Of x11 in The Expansion Of (2x2 + x – 3)6 is

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## Question

### Solution

Correct option is

192

(x – 1)6 (2x + 3)6

(x6 – 6x5 + 15x4 – 20x3….).{(2x)6 + 6.(2x)5. 3 + 15(2x)4. 32 +…}

Coefficient of x11 is

18.25 – 6.26 = 25(18 – 12) = 192.

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