find a square of 11^2
Answers
Answered by
0
Answer:
121 is the answer of your question
Answered by
2
Answer:
An expression, {11+2\sqrt{30}
To find,
The square root of the expression.
Solution,
Let x is the given expression. So,
x=\sqrt{11+2\sqrt{30} }x=
11+2
30
We can split 11 as 6 + 5. So,
x={6+5+2\sqrt{30}
We can write the above expression as follows :
x=(\sqrt6)^2+(\sqrt5)^2+2\times \sqrt 6\times \sqrt 5x=(
6
)
2
+(
5
)
2
+2×
6
×
5
We know that, a^2+b^2+2ab=(a+b)^2a
2
+b
2
+2ab=(a+b)
2
So,
x=(\sqrt6+\sqrt5)^2x=(
6
+
5
)
2
Taking root both sides :
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