Question

Write whether 2 root 45 + 3 root 20 whole divided by 2 root 5 is rational or irrational

Answer 1

We know that

2root45 = 18root5

3root20 = 6root5

Adding and dividing by two =

24root5/ 2root5= 12/root 5

Rationalising we get 12 (5)=60 that is rational

Thanks

Answer 2

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