Question

Factorise x³+13x²+32+20

Answer 1

Hope u like my process
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=> x³ + 13x² +32x +20

= x³ + x² + 12x² + 12x + 20x +20

= x²(x +1) + 12x(x +1) +20(x +1)

= (x+1)(x² +12x +20)

= (x +1) (x² + 2x + 10x + 20)

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

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

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