Question

Rationalise
3/√5+4
please try​

Answer 1

Brown brown blue red yellow yellow blue blue red yellow yellow purple purple red yellow blue blue purple blue blue red yellow yellow blue blue red yellow blue

Answer 2

your answer is

3/√5+4×√5-4/√5-4

=3×(√5-4) /(√5+4)×(√5-4)

=3√5-12/√5²-4² [as per equation (a+b)(a-b)]

=3√5-12/5-16

=3√5-12/-11

=3√5-12/-11