Question

4) Write the coefficient of x 3 in x 4 – 2x3 + x2 – 3
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Answer 1

Answer:

x=3

x4 - 2x3 + x2 - 3

(3)4 - 2(3)3 + (3)2 - 3

12 - 18 + 6 - 3

6+6-3

12-3

9