Question

Factorise x³+17x²+42x​

Answer 1

Answer:

=x3+17x2+42x=0

=x3+14x2+3x2+42x=0

=(x3+14x2)(3x2+42x)=0

=x2(x+14)+3x(x+14)

=(x2+3x)(x+14)

=x(x+3)(x+14)

Step-by-step explanation:

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