Question

A²-b²=(a+b)(a-b),find 194*206

Answer 1

Answer:

Step-by-step explanation:

By the equation,

a²-b²= (a+b) (a-b)

194×206

(200-6) × (200+6)

(200)²- (6)²

40000-36

39964.

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Answer 2

Answer:

Step-by-step explanation:

(a+b)(a-b)=a^2-b^2

then 194*206=

(200-6)=194

(200+6)=206

hence a=200 and b=6

(200+6)(200-6)=200^2-6^2

                         40000-36=39964