rationalise under root 7 + under root 5 / underroot 7 - under root 3.
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Answer:
6 + √35
Step-by-step explanation:
√7 + √5 / √7 -√5
= (√7 + √5 / √7 -√5 ) x (√7 + √5 / √7 + √5)
= (√7 + √5)^2 / √7^2 - √5^2
= 7 + 5 + 2√35 / 7 -5
= 12 + 2√35 / 2
= 2(6 + √35) / 2
= 6 + √35
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