quadratic polynomials :
6x^ - 3 - 7x
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=6x2-7x-3
=R|w. 6×3=18
2×9=18
Therefore factor of 18 are -9,2
So 6x2-9x+2x-3
=3x(2x-3)+1(2x-3)
=(3x+1)(2x-3)
x=-1/3,3/2
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