evaluate the following using suitable identity 198×198-102×102
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Answered by
6
Answer:
198 × 198 - 102 × 102
= 198 ^ 2 - 102 ^ 2
= (198 + 102) × (198 - 102)
= 300 × 96
= 300 × (100 - 4)
= 300 × 100 - 300 × 4
= 30000 - 1200
= 28800
Answered by
2
Answer:
198 square - 102 square
(a+b)(a-b) = a^ - b^
(198 +102)(198-102)
=300 × 96
= 28800
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