Question

(4.9) square using suitable identitiy


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Answer 1

Answer:

(5-0.1)^2

Step-by-step explanation:

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

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Answer 2

ANSWER

Value of (4.9)²

We can use (a+b)² = a² + 2ab + b²

or (a−b)² = a² + b² - 2ab

⇒(5−0.1)² = ( 4.9 )²

=5² + ( 0.1 )² - 2 ( 5 ) ( 0.1 )

= 25+0.01−1

= 24.01

hence, the answer is 24.01.

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