Question

Evaluate without actual multiplication. a)(107)^2 b)198 ×202 c) (1.01)2 –(0.99)^2 d) 1.01 × 0.99 e) 998^2

Answer 1

My ans

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1. 11449
2. 39996
3. 0.04
4. 0.9999
5. 996004

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Answer 2

Step-by-step explanation:

1 st = (107)2

so we do this type of equation...

(107)2 is equal to (a+b)2

= (100+7)2

= (100)2+2×100×7+(7)2

= (10000)+1400+49

= 11449 ans of first equation...

You should do this type of equation to find the values....

(a + b)2 = A2+2ab+B2

(a-b)2 = a2-2ab+B2

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