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Factor the trinomial $2r^2+1r-1$ of the form $ax^2+bx+c$, first, make the product of $2$ and $-1$
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$\left(2\right)\left(-1\right)=-2$
Learn how to solve polynomial factorization problems step by step online. Factor the expression 2r^2+r+-1. Factor the trinomial 2r^2+1r-1 of the form ax^2+bx+c, first, make the product of 2 and -1. Now, find two numbers that multiplied give us -2 and add up to 1. Rewrite the original expression. Factor 2r^2+2r-r-1 by the greatest common divisor 2.