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Vlad1618 [11]
3 years ago
15

To rationalize the denominator of (5-\sqrt(7))/(9-\sqrt(14)) , you should multiply the expression by which fraction?

Mathematics
2 answers:
statuscvo [17]3 years ago
4 0
You would multiply by 

\frac{9+\sqrt{14}}{9+\sqrt{14}}.

When you rationalize the denominator, you multiply by the conjugate of the denominator.  The conjugate is the same numbers and radicals, but with the sign of the radical switched.
Tpy6a [65]3 years ago
3 0

Answer:

\frac{9+\sqrt{14}}{9+\sqrt{14}}

Step-by-step explanation:

we have

\frac{5-\sqrt{7}}{9-\sqrt{14}}

we know that

To rationalize the denominator, multiply by the conjugate of the denominator

so

\frac{5-\sqrt{7}}{9-\sqrt{14}}*\frac{9+\sqrt{14}}{9+\sqrt{14}}=\frac{(5-\sqrt{7})(9+\sqrt{14})}{9^{2}-14}\\ \\=\frac{(5-\sqrt{7})(9+\sqrt{14})}{67}

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