SOLUTION: Please help with this polynomial: 2x^3-x^2-18x+9=0
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Question 764744
:
Please help with this polynomial:
2x^3-x^2-18x+9=0
Answer by
tommyt3rd(5050)
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(2x^3-x^2)-(18x-9)=0
x^2(2x-1)-9(2x-1)=0
(x^2-9)(2x-1)=0
which leads to x=1/2, or x=3, or x=-3
:)