First slide

Theory of expressions

Question

If $x + 1$ is a factor of $x^{4} + (p - 3) x^{3} - (3 p - 5) x^{2}$ $+ (2 p + 9) x + 12$ then value of $P$ is.

Moderate

A

-2
B

2
C

1
D

-1

Solution

Use the fact that expression becomes zero when x = – 1.

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