Rationalise the Denominator :- (5+2√3) / (7+4√3) Thank You !:)
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=(5+2√3) / (7+4√3) ×(7- 4√3) /( 7- 4√3)
=5(7- 4√3) + 2√3(7- 4√3) /7² - (4√3)² [ (a+b)(a-b) = a²- b²]
=35-20√3 + 14√3 - 8 ×3 / 49 - 16 × 3
=35-24 -6√3 / 49- 48
=9-6√3
=5(7- 4√3) + 2√3(7- 4√3) /7² - (4√3)² [ (a+b)(a-b) = a²- b²]
=35-20√3 + 14√3 - 8 ×3 / 49 - 16 × 3
=35-24 -6√3 / 49- 48
=9-6√3
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