Question

Using suitable identity, find the value of:
(128)² - (72)²
​

Answer 1

Answer:

11200

Step-by-step explanation:

a²-b²= (a+b)(a-b)

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Answer 2

By using

a²-b²=(a+b)(a-b)

(128+72)(128-72)

(200)(56)

11200

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