Question

98² evaluate by using suitable identity.
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Answer 1

We can write (98)^2 as ( 100 - 2)^2

Therefore it is our (a-b) ^2

Identity!So, (100-2)^2

= (100)^2 + (2)^2 - 2(100)(2)

= 10000 + 4 - 400

Which is equal to=10004-400

= 9604

Therefore 98^2 = 9604

Answer 2

GIVEN...

• 98²

SUITABLE IDENTITY...

• (a-b)²=a²-2ab+b²

SOLUTION...

= 98²

= (100-2)²

= 100²-2×100×2+2²

= 10000-400+4

= 10004-400

= 9604

FINAL ANSWER...

$\huge \implies \: (9604)$