Practice problem
Let aaa be a nonzero real number with a≠1a \not= 1a=1. Simplify: a−aa+a\frac{a-\sqrt{a}}{a+\sqrt{a}}a+aa−a
a−2a+1a−1\frac{a - 2 \sqrt{a} + 1}{a-1}a−1a−2a+1
a+1a−1\frac{a+1}{a-1}a−1a+1
a+2a+1a−1\frac{a + 2\sqrt{a} + 1}{a-1}a−1a+2a+1
a−1a+1\frac{a-1}{a+1}a+1a−1
The expression cannot be simplified.
Type a concept, like “slope” or “photosynthesis”.