1). 1/2√5-√3 solve plz
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Given,
1/(2√5 -3)
→(2√5 +3)/(2√5 -3)(2√5 +3)........ multiplying with comgugates.
→(2√5+3)/{(2√5)² -(9)²}
→(2√5 +3)/(10-9)
→2√5+3.
Identities used:-
(a-b)(a+b) = a² -b²
1/(2√5 -3)
→(2√5 +3)/(2√5 -3)(2√5 +3)........ multiplying with comgugates.
→(2√5+3)/{(2√5)² -(9)²}
→(2√5 +3)/(10-9)
→2√5+3.
Identities used:-
(a-b)(a+b) = a² -b²
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