Question

rationalise the denominator 2/√7-5​

Answer 1

Step-by-step explanation:

=2/√7 -5

=(2-5√7) /√7 {multiply by √7 in 5}

=(2-5√7) ×√7 /√7 ×√7 {multiply by√7 in numerator and denominator}

=(2√7 -5) / 7. {this is answer}

hope it's clear and it helps you..

Answer 2

$\huge\red{✏Answer✏}$

2/√7+√5

= 2(√7-√5)(√7-√5)

= 2(√7-√5)/7-5

= 2(√7-√5)/2

= (√7-√5)

hope it's help you