Math, asked by adszxcvnj, 4 months ago

evaluate using identity 205*206

Answers

Answered by xpranatix

2

Answer:

205*206

(200+5)(200+6)

(x+a)(x+b) = x^2 + (a+b)x + ab

200^2 + (5+6)200 + 5*6

40000 + 11*200 + 30

40000 + 2200 + 30

42230

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