Question

using Indentituy solve the question (72) power 2​

Answer 1

Answer:

5184

Step-by-step explanation:

(72)^2

(72*72) OR (72)^2

5184

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Answer 2

Answer: 5180

Step-by-step explanation:

72^2 can also be written as (70+2)^2

It forms the identity (a+b)^2= a^2+b^2+2ab

                                (70+2)^2= (70)^2 +(2)^2+2(70)(2)

                                               =4900+4+280

                                               =5180

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