Question

Find the following by suitable identity(4a²-9b²)(4a²+9b²)​

Answer 1

Answer:

$16a^{4} - 81b^{4}$

Step-by-step explanation:

Using identity: $(a^{2} -b^{2} )(a^{2} +b^{2} ) = a^{2} -b^{2}$

So we will proceed like this:

$(4a^2-9b^2)(4a^2+9b^2) = (4a^2)^2- (9b^2)^2 = 16a^4 - 81b^4$

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Answer 2

Answer:

Step-by-step explanation:

Here you go mate

Step 1

(4a²-9b²)(4a²+9b²)​  Question

Step 2

(4a²-9b²)(4a²+9b²)​  use perfect square formula

(4a^2)^2-(9b^2)^2

Step 3

(4a^2)^2-(9b^2)^2  Simplify

16a^4-81b^4

Answer

16a^4-81b^4

Hope this helped