Question

201*199 slove this using fourmula

Answer 1

(200+1)(200-1)=(a+b)(a-b)=a2-b2
=(200)^2-(1)^2=40000-1=39999

Answer 2

Heya ✋

$201 \times 199 \\ \\ = (200 + 1)(200 - 1) \\ \\ we \: apply \: this \: identity \: here \\ \\ (a + b)(a - b) = a ^{2} - b ^{2} \\ \\ = (200) ^{2} - (1) ^{2} \\ \\ = 40000 - 1 \\ \\ = 39999$




Thanks :))))