40 + 3 x minus x square
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-x² +3x +40
=- x² +(8-5)x +40
= -x² +8x -5x +40
= -x(x-8)-5(x-8)
= (-x-5)(x-8)
=- x² +(8-5)x +40
= -x² +8x -5x +40
= -x(x-8)-5(x-8)
= (-x-5)(x-8)
amir273:
thanku bhai
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