Simplify (x² − 1)/(x + 1)
Worked out line by line the way a teacher would write it.
Answer
| Simplified form | x − 1 |
Step-by-step solution
3 steps-
1 Given\frac{x^{2} - 1}{x + 1}
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2 Factor the numerator and the denominator\frac{\left(x - 1\right) \left(x + 1\right)}{x + 1}
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3 Cancel the common factor x + 1
A factor shared by the numerator and the denominator cancels: (A·x + 1)/(B·x + 1) = A/B. Only factors cancel, never single terms of a sum, and values that make the cancelled factor 0 stay excluded.
x - 1Valid for x ≠ -1.
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