Rationalize :- 15/(V7-73)
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Q. Rationalize √5 / (√7-√3)
Answer:
√5(√7+√3)
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4
Step-by-Step Explanation:
to rationalize a number we must multiply both the numerator and denominator by opposite sign of denominator, i.e -
√5
-----------
√7-√3
√5 √7+√3
----------- × -----------
√7-√3 √7+√3
√5(√7+√3)
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7 - 3
√5(√7+√3)
----------------
4
hence, rationalised.
Therefore, rationalising √5/√7-√3 we get,
√5(√7+√3)
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4
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