Question

The coefficient of x2 in 3x3+2x2-
X+1 is: *
O a. 1
O b. 2
O c. 3
O d.-1​

Answer 1

Let a and b be the coefficient of x
2
in (1+2x−x
2
+3x
3
)
4
and (1+2x−x
2
+3x
3
+4x
4
)
4
respectively. Find the value of (a−b).
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