Q. 1 F4.0( 4 Votes )

# Factorize each of

Given,

x3 + 13x2 + 32x + 20,

put x = – 1

then, – 1 + 13 – 32 + 20 = 0

since, this equation is divisible by (x + 1). according to the question,

x3 + 13x2 + 32x + 20 = (x + 1)(x2 + 12x + 20)

= (x + 1)[x2 + 10x + 2x + 20]

= (x + 1)[x(x + 10) + 2(x + 10)]

= (x + 1)(x + 2)(x + 10)

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