Question

(4a-7b)(4a+7b)
Give me correct answer plz..​

Answer 1

Answer:

(4a-7b) (4a+7b)

(4a-7b) (4a+7b) = (4a)² - (7b)²

= 16a² - 49b²

[property : (a+b)(a-b) = a² - b²]

Step-by-step explanation:

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Answer 2

Answer:

16a²-49b²

Step-by-step explanation:

we know that,

(a-b)(a+b)=a²-b²

using the above identity in given equation

(4a-7b)(4a+7b)= (4a)²+(7b)²

=> 16a²-49b²

Hence,

The correct answer is 16a²-49b².

Hope it helps:)

Thankyou