Factor 2x2+x−1

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Factor 2x2+x−1

SlabydouluS62 · Accepted Answer

2x2+x−1    Multiply the coefficient of the first term by the constant    2×(−1)=−2    Rewrite, splitting the middle term x into 2x and -x    2x2+2x−x=1    Factor out the common terms    2x(x+1)−(x+1)right⇒−(x+1)=−1(x+1)    (x+1)(2x−1)

Daniel Cormack · Accepted Answer

2x2+x−1    Break the expression into groups    =(2x2−x)+(2x−1)    Factor out x    =x(2x−1)+(2x−1)    Factor out common trm 2x-1    =(2x−1)(x+1)

Factor 2x2+x−1

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