2. a^2 – (2a + 3b)^2
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Answered by
4
Answer:
=> a² - (2a + 3b)²
=> a² - (2a)² + 2(2a)(3b) + (3b)²
=> a² - 4a² + 12ab + 9b²
=> -3a² + 12ab + 9b²
=> -3a² + 6ab + 6ab + 9b²
=> 3a(2b + a) + 3b(2b + a)
=> (2b + a)(3a + 3b) ans.
Answered by
1
Answer:
a² – (2a + 3b)²
using a²- b²= (a-b)(a+b)
= ( a - (2a+3b))(a+2a+3b)
= (a-2a-3b)(3a+3b)
= (-a - 3b)(3a + 3b)
= (a+3b)(3a+3b)
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