Question

12 and 13 th sum.. Pls no slams... Fast with full explanation.. Written on sheet pls do ths fast

Answer 1

Answer:

13) Answer is 6 and Rational

Step-by-step explanation:

2√45 + 3√20 / 2√5

=2√(5x9) + 3√(5x4) / 2√5

=2x3√5 + 3x2√5 / 2√5                            (∵,√9 = 3 and √4 = 2)

=6√5 + 6√5 / 2√5

=12√5 / 2√5

=6