Question

using identities evaluate 105*105​

Answer 1

Answer:

Answer

(105)

2

=(100+5)

2

[(a+b)

2

=a

2

+b

2

−2ab]

=(100)

2

+(5)

2

+2(5)(100)

=10000+25+1000

=11025.

Answer 2

As per the data given in the above question.

In the above question, it is given that,

The given data is $105\times 105$,

 We have to evaluate the given equation by identities we get.

Thus, identities is comparing the equation with other equation.

writing the given equation we get,

$(105\times 105)=105^{2}\\=(100+5)^{2}$

Comparing it with $\left[(a+b)^{2}=a^{2}+b^{2}-2 a b\right]$

$\begin{array}{l}=(100)^{2}+(5)^{2}+2(5)(100) \\=10000+25+1000 \\=11025\end{array}$

Hence we get the value as 11025.