rationalise the denominators of 1/2√5-√3
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Answer:
1÷2√5-3
=(1÷2√5-3)×(2√5+3÷2√5+3)
=2√5+3÷(2√5)²-(3)². using (a+b)(a-b)=a²-b²
=2√5+3÷4×5-9
=2√5+3÷20-9
=2√5+3÷11
2√5+3/11 is your answer
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