Question

Evaluate: 102^2 +98^2​

Answer 1

Hi Mate !!

Here is your answer :

Question : Solve using suitable identity : 102² - 98².

Solution :

102² - 98² , it is of the form a² - b².

And as we know that , a² - b² = ( a + b ) ( a - b ).

102² - 98² , here a = 102 and b = 98.

So,

102² - 98² = ( 102 + 98 ) ( 102 - 98 )

102² - 98² = 200 * 4

102² - 98² = 800.

Hence,

102² - 98² = 800..

Answer 2

Answer:

(102+98)² (102-98)². (a²-b²) = (a-b) (a+b)

200×4

800

Step-by-step explanation:

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