Question

factorise
x²+12x²+20

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Answer 1

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x² + 12x + 20

Splitting the middle term

= x² + 10x + 2x + 20

= x² + 10x + 2x + 2 × 10

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

= ( x + 10 ) ( x + 2 )

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