Question

On simplifying to root 45 + 3 root 20 upon 2 root 5 the answer is rational or irrational

Answer 1

Answer:

Solution

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Consider the problem

2

5

2

45

+3

20

=

2

5

2

3×3×5

+3

5×2×2

=

2

5

2×3

5

+3×2

5

=

2

5

6

5

+6

5

=

2

5

12

5

=6