Question

factorize:- 16a²-81b⁴​

Answer 1

16a4−81b4⇒(4a2)2−(9b2)2

                 ⇒(4a2−9b2

(4a2+9b2)

                       ⇒[(2a)2−(3b)2](4a2+9b2)

                       ⇒(2a−3b)(2a+3b)(4a2+9b2)

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Answer 2

Step-by-step explanation:

to factorise,

this is formula of a²-b²

a²-b²= (a+b)(a-b)

16a²-81b²= (4a+9b)(4a-9b)

the answer is (4a+9b)(4a-9b

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