factorise: 12x2 + 7x - 10
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Step-by-step explanation:
=12x^2+7x-10
=12x^2+(15-8)x-10
=12x^2+15x-8x-10
=3x(4x+5)-2(4x+5)
=(4x+5)(3x-2)
Therefore,x=5/4 and 2/3.
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