Question

evaluate using identity
2.05X1.95​

Answer 1

Answer:

3.75

Step-by-step explanation:

2.05 × 1.95

= (2 +0.5 )(2 - 0.5) [ (a+b)(a-b)=a^2 - b^2 ]

= ( 2^2) - ( 0.5 ^2 )

= 4 - 0.25

= 3.75

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Answer 2

Step-by-step explanation:

(2+0.5) (2-0.5) [using identity:- (a+b)( a-b)=a^2 -b^2]

(2^2)-(0.5^2)

4-0.25