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Math Drills
Rational expressions
Adding and subtracting
Practice 1
Rational expressions
Adding and subtracting
1 / 5
Basic
Choose the expression equal to this one.
1
x
+
1
+
1
x
−
1
\frac{1}{x + 1} + \frac{1}{x - 1}
x
+
1
1
+
x
−
1
1
1
2
(
x
+
1
)
(
x
−
1
)
\frac{2}{\left(x + 1\right)\left(x - 1\right)}
(
x
+
1
)
(
x
−
1
)
2
2
2
x
(
x
+
1
)
(
x
−
1
)
\frac{2x}{\left(x + 1\right)\left(x - 1\right)}
(
x
+
1
)
(
x
−
1
)
2
x
3
2
2
x
\frac{2}{2x}
2
x
2
4
2
x
x
+
1
\frac{2x}{x + 1}
x
+
1
2
x
Answer
