Question

simplify (2a + 3b)(2a - 3b)(4a + 5b)(a+b)​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

(2a + 3b) (2a+ 3b) (4a +5b )(a+b)

= (2a )^2 - (3b)^2 (4a +5b) (a+b)

= 4a^2 - 9b^2 +4a^2 +4ab +5ab +5b^2

=4a^2 + 4a^2 - 9b^2 +5b^2 +4ab+5ab

= 8a^2 - 4b^2 + 9ab

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