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Q : 6 Using identities, evaluate.

(v) $5.2^2$

Answers (1)

best_answer

Here we will use :

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

Thus

$(5.2)^2 = (5.0 + 0.2)^2 = 5^2 + 2(5)(0.2) + (0.2)^2$

or $= 25 + 2 + 0.04$

$= 27.04$

Posted by

Devendra Khairwa

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