Question

7a+ 1
3a
= 6 and ga²+1
49a²​

Answer 1

Answer:

3a + 1/5a = 3

25a^2 + 1/9a^2 = ?

Now take 5/3 on both sides of the equation

3a(5/3) + 1/5a(5/3) = 3(5/3)

We get

5a + 1/3a = 5

Now squaring both sides of the equation,

25a^2 + 1/9a^2 + 2(5a)(1/3a) = 5^2

25a^2 + 1/9a^2 + 10/3 = 25

25a^2 + 1/9a^2 = 25 - 10/3

25a^2 + 1/9a^2 = 65/3