Question

write whether 2√45+3√20÷2√5 on simplification gives a rational or irrational number.

Answer 1

we get 6 on simplifying it which is a rational

Answer 2

I HOPE IT WILL HELP U
2√45+3√20/2√5
2√3×3×5+3√2×2×5/2√5
2×3√5+3×2√5/2√5
6√5+6√5/2√5
12√5/2√5
=6
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