factorise 6xsquare-5x-6
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middle term splitting
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6x^2-5x-6(tip:multiply first and last coefficient and take out their lcm and try to make the middle digit from them)
=6x^2-9x+4x-6
=3x(2x-3)+2(2x-3)
=(3x+2)(2x-3)
x=-2/3 and x=3/2
=6x^2-9x+4x-6
=3x(2x-3)+2(2x-3)
=(3x+2)(2x-3)
x=-2/3 and x=3/2
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