(2a + 1) \((\frac{1}{2a-1}-\frac{2}{4a^2-1})\) = …………… A

1.	(2a + 1) \((\frac{1}{2a-1}-\frac{2}{4a^2-1})\) = …………… A) -1 B) – 3 C) 1 D) 2
Answer» Correct option is C) 1 Correct option is (C) 1 \((2a+1)(\frac1{2a-1}-\frac2{4a^2-1})\) \(=(2a+1)(\frac{2a+1-2}{4a^2-1})\) \(=(2a+1)\frac{(2a-1)}{4a^2-1}\) \(=\frac{4a^2-1}{4a^2-1}=1\)

(2a + 1) \((\frac{1}{2a-1}-\frac{2}{4a^2-1})\) = …………… A) -1 B) – 3 C) 1 D) 2

Answer»

Correct option is C) 1

Correct option is (C) 1

\((2a+1)(\frac1{2a-1}-\frac2{4a^2-1})\) \(=(2a+1)(\frac{2a+1-2}{4a^2-1})\)

\(=(2a+1)\frac{(2a-1)}{4a^2-1}\)

\(=\frac{4a^2-1}{4a^2-1}=1\)