Question

4(a+b)2-9(a-b)2 alive it​

Answer 1

Answer:

$8a + 8b - 18a + 18b$

reason,

$- \: \times - = +$

$2(4a + 4b - 9a + 9b) \\ 2( - 5a + 13b) \\ - 10a + 26b$

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Answer 2

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Step-by-step explanation:

8a+8b−18a+18b

reason,

- \: \times - = + −×−=+

\begin{gathered}2(4a + 4b - 9a + 9b) \\ 2( - 5a + 13b) \\ - 10a + 26b\end{gathered}

2(4a+4b−9a+9b)

=>2(−5a+13b)

= −10a+26b