Question

8.1^2 algerabic identity​

Answer 1

Answer:

65.61 is the answer

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Answer 2

Answer:

$(8.1)^2=65.61$

Step-by-step explanation:

Given : Expression  $(8.1)^2$

To find : Evaluate the expression by using Identity?

Solution :

We can write the expression as

$(8.1)^2=(8+0.1)^2$

We know, The identity $(a+b)^2=a^2+b^2+2ab$

Substitute, a=8 and b=0.1

$(8+01)^2=8^2+0.1^2+2(8)(0.1)\\\\(8+0.1)^2=64+1.6+0.01\\\\(8+0.1)^2=65.61\\\\(8.1)^2=65.61$

Therefore, $(8.1)^2=65.61$