Rationalise the denominator 4/( 7 root 5 - 5 root 7). Please do not provide any links Share with your friends Share 0 Abhishek Kr. Jha answered this Dear student, Here is the solution of your asked query: 475-57= 475-57×75+5775+57 {rationalising the denominator}=285+207752-572 {using the identity a-ba+b=a2-b2}=285+207245-175=285+20770=28570+20770=255+277 Regards -4 View Full Answer
