check whether 9-2x is a factor of 2x cube -9x square+2x-7
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9-2x=0
=-2x=-9
x=-9/-2
x =9/2
2x cube -9x square +2x -7
=2×(9/2) cube - 9 × (9/2)square+2×(9/2) -7
= 809/4 - 809/4+9-7
= 9-7
= 2
so,
no,
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