Question

Verify the following: (3a + 5b) ^ 2 - 30ab = 9a ^ 2 + 25b ^ 2​

Answer 1

Step-by-step explanation:

$L.H. S= (3a + 5b) ^ 2 - 30ab \\ = 9 {a}^{2} + 25 {b}^{2} + 30ab - 30ab \\ = 9 {a}^{2} + 25 {b}^{2} \\ which \: is \: R.H.S \\ L.H. S = R.H.S$

hence verified

Answer 2

Step-by-step explanation:

Here is you answer in the above picture

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