Question

$99 {}^{2} - 98 {}^{2}$
Plz answer
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Answer 1

Answer:

99^2-98^2

(100-1)^2-(100-2)^2

[(100)^2+(1)^2-2×100×1] -[(100)^2+(2)^2-2×100×2]

(10000+1-200) - (10000+4-400]

9801-9604

198