Question

Ratinalise tge denominatir of the following real number :- (i). 5√3-5√2/√48-√18

Answer 1

Answer:

5√3-5√2/√48-√18

= 5 ( √3 - √2) / ( 4√3 - 3√2)

= 5 (√3 - √2) ( 4√3 + 3√2) /( 4√3 - 3√2) ( 4√3 + 3√2)

= 5 ( 12 +3√6 - 4√6 - 6) ( 48 - 18)

= 5 ( 6 - √6) / 30

= ( 6 - √6) / 5

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