If a ^ { 2 } + b ^ { 2 } = 45 , a b = 18 then { 1 }/ { a } - { 1 } /{ b } then :

CA CPT Model Test Paper 7 with solutions for online practice

Question : 169 of 200

Marks: +1, -0

a ^ { 2 } + b ^ { 2 } = 45 , a b = 18

then

{ 1 }/ { a } - { 1 } /{ b }

then :

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