\((\frac{a}{3}+\frac{b}{5} )\) \((\frac{a}{3}-\frac{b}{5} )\)= ......

1.	\((\frac{a}{3}+\frac{b}{5} )\) \((\frac{a}{3}-\frac{b}{5} )\)= ............................A) \(\frac{a^2}{9}+\frac{b}{2} \)B) \(\frac{a^2}{9}\) – 1 C) \(\frac{a^2}{9}-\frac{b^2}{25} \)D) \(\frac{2a}{3}-\frac{b}{3} \)
Answer» Correct option is C) \(\frac{a^2}{9}-\frac{b^2}{25} \) Correct option is (C) \(\frac{a^2}9-\frac{b^2}{25}\) \((\frac a3+\frac b5)(\frac a3-\frac b5)=(\frac a3)^2-(\frac b5)^2\) \(=\frac{a^2}9-\frac{b^2}{25}\)

\((\frac{a}{3}+\frac{b}{5} )\) \((\frac{a}{3}-\frac{b}{5} )\)= ............................A) \(\frac{a^2}{9}+\frac{b}{2} \)B) \(\frac{a^2}{9}\) – 1 C) \(\frac{a^2}{9}-\frac{b^2}{25} \)D) \(\frac{2a}{3}-\frac{b}{3} \)

Answer»

Correct option is C) \(\frac{a^2}{9}-\frac{b^2}{25} \)

Correct option is (C) \(\frac{a^2}9-\frac{b^2}{25}\)

\((\frac a3+\frac b5)(\frac a3-\frac b5)=(\frac a3)^2-(\frac b5)^2\) \(=\frac{a^2}9-\frac{b^2}{25}\)