You can
put this solution on YOUR website!.......4x^2-7x+3
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2x+1 )8x^3-10x^2-x+3
......8x^3+4x^2
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..........-14x^2-x
..........-14x^2-7x
..........--------------------------
................6x+3
................6x+3
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thus (2x+1)(4x^2-7x+3)=(8x^3-10x^2-x+3)