factorise x square +4x-12
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= x²+4x-12
= x²+6x-2x-12
= x(x+6)-2(x+6)
= (x+6)(x-2)
Hope it helps
= x²+6x-2x-12
= x(x+6)-2(x+6)
= (x+6)(x-2)
Hope it helps
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