Question

Is (2x+1) a factor of 2x^3 +x^2-2x-1

Answer 1

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Answer 2

Answer:

no

Step-by-step explanation:

(2x³ + x² - 2x - 1)(2x+1) = 0 { factor theorem}

4x⁴+2x³-4x²-2x +2x³+x²-2x-1 = 0

4x⁴ +2x³-3x²-4x-1= 0

LHS is not equal to RHS so, 2x-1 isn't a factor of 2x³+x²-2x-1