Question

expand using indentities​

Answer 1

4a²+1/b²+4a/b

is the answer

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Answer 2

Answer:

$\huge\star\underbrace{\mathtt\red{⫷❥ᴀ᭄} \mathtt\green{n~ }\mathtt\blue{ §} \mathtt\purple{₩}\mathtt\orange{Σ} \mathtt\pink{R⫸}}\star\:$

Step-by-step explanation:

$(2a + \frac{1}{b})^{2} \\ = ({2a})^{2} + ( { \frac{1}{b} })^{2} + 2(2a)( \frac{1}{b}) \\ = {4a}^{2} + 1 / {b}^{2} + \frac{4a}{b}$

HOPE IT HELPS.