Question

please answer the question.
find the following by using identity -I​

Answer 1

Answer:

3a(3)+2b(5)/15

9a+10b/15

Answer 2

Answer: $\frac{9a^2}{25} + \frac{4ab}{5} + \frac{4b^2}{9}$

Step-by-step explanation:

$(\frac{3}{5} a + \frac{2}{3} b)^2$

=> $(\frac{3}{5}a)^2 + 2*\frac{3}{5} a*\frac{2}{3} b + (\frac{2}{3} b)^2$          [since (a + b)² = a² + 2ab + b²]

=> $\frac{9a^2}{25} + \frac{4ab}{5} + \frac{4b^2}{9}$

Hope this helps you .

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