The problem asks us to simplify the following expression: $\frac{\frac{3m^2 + 2m - 1}{m^2 - 1}}{\frac{2m - 1}{m^2 - 2m + 1}}$

AlgebraAlgebraic simplificationRational expressionsFactoring
2025/5/1

1. Problem Description

The problem asks us to simplify the following expression:
3m2+2m1m212m1m22m+1\frac{\frac{3m^2 + 2m - 1}{m^2 - 1}}{\frac{2m - 1}{m^2 - 2m + 1}}

2. Solution Steps

We can rewrite the expression as a division of two fractions:
3m2+2m1m21÷2m1m22m+1\frac{3m^2 + 2m - 1}{m^2 - 1} \div \frac{2m - 1}{m^2 - 2m + 1}
To divide fractions, we multiply by the reciprocal of the second fraction:
3m2+2m1m21m22m+12m1\frac{3m^2 + 2m - 1}{m^2 - 1} \cdot \frac{m^2 - 2m + 1}{2m - 1}
Now, we factor the polynomials:
3m2+2m1=(3m1)(m+1)3m^2 + 2m - 1 = (3m - 1)(m + 1)
m21=(m1)(m+1)m^2 - 1 = (m - 1)(m + 1)
m22m+1=(m1)(m1)=(m1)2m^2 - 2m + 1 = (m - 1)(m - 1) = (m - 1)^2
2m1=2m12m - 1 = 2m - 1
Substitute the factored expressions into the equation:
(3m1)(m+1)(m1)(m+1)(m1)22m1\frac{(3m - 1)(m + 1)}{(m - 1)(m + 1)} \cdot \frac{(m - 1)^2}{2m - 1}
Now, cancel common factors:
(3m1)(m1)(m1)22m1=(3m1)(m1)(m1)(m1)(2m1)\frac{(3m - 1)}{(m - 1)} \cdot \frac{(m - 1)^2}{2m - 1} = \frac{(3m - 1)(m - 1)(m - 1)}{(m - 1)(2m - 1)}
Cancel (m1)(m - 1):
(3m1)(m1)2m1\frac{(3m - 1)(m - 1)}{2m - 1}
Therefore, we have:
(3m1)(m1)2m1\frac{(3m - 1)(m - 1)}{2m - 1}

3. Final Answer

(3m1)(m1)2m1\frac{(3m-1)(m-1)}{2m-1}

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