Question

Using a suitable identity, evaluate the followin
(a) (101)^2
(b) (99)^2

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Answer 1

Answer:

(101) = (100+1) we can say

Step-by-step explanation:

(100+1)^2. (a+b)^2

now by using formula a^2+b^2+2ab

then, (100)^2+(1)^2+2×100×1

10000+1+200

(a) 10201

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solution of b (99)^2 =(100-1)^2

again using formula (a-b)^2

=a^2+b^2-2×ab

10000 +1 -2×100×1

10001-200

(b) 9,801

Answer 2

Answer:

a= 103

b=101

Step-by-step explanation:

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