Question

Evaluate 5.2square using identities

Answer 1

5.2²

(5+0.2)²

5² + (2×(5×0.2)) + 0.2²

25+ 2+0.04

27.04

Answer 2

The expression value is $(5.2)^2=27.04$

Step-by-step explanation:

Given : Expression $(5.2)^2$

To find : Evaluate the expression ?

Solution :

Write the expression as

$(5.2)^2=(5+0.2)^2$  

Using identity,

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

Substitute, a=5 and b=0.2

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

$(5.2)^2=25+2+0.04$

$(5.2)^2=27.04$

Therefore, the expression value is $(5.2)^2=27.04$

#Learn more

Evaluate the following by using identity-l(i) 5.2square

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