Rationalize the denominators 2/√2+7
Answers
Answered by
1
multiply the numerator and the denominator by rt2-7
Answered by
1
Answer:
I don't have answer but that's the method
Step-by-step explanation:
Answer:-
\dfrac{2 \sqrt{7} }{7}
7
2
7
Given:-
\dfrac{2}{ \sqrt{7} }
7
2
To find :-
To rationalise the denominator.
Solution :-
\dfrac{2}{ \sqrt{7} } \times \dfrac{ \sqrt{7} }{ \sqrt{7} }
7
2
×
7
7
Multiply denominator and numerator by √7.
= \dfrac{2 \sqrt{7} }{ {( \sqrt{7} )}^{2} }=
(
7
)
2
2
7
= \dfrac{2 \sqrt{7} }{7}=
7
2
7
Hence, the required answer is :\dfrac{2 \sqrt{7} }{7}
7
2
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