Question

(200)²-(100)² using identites​

Answer 1

Step-by-step explanation:

(200+100)(200-100)

(300)(100)

30000

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Answer 2

Answer:

using identity a^2-b^2

a=200

b=100

(200)^2-(100)^2

(200+100)(200-100)

300×100

30000