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4./ Factorise:(ii) 2r2+7x+3(iv) 3x-x-4) 12- 7x+112 x^{3}-7 x+1 |
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Answer» 6x*x+5x-6 =6x*x+9x-4x-6 =3x(2x+3)-2(2x+3) =(3x-2)(2x+3) |
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