Question

state whether each of the following is rational or irrational. √5 ×√2

Answer 1

Answer:

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Answer 2

Answer:

Let us assume that root 2+root 5 us a rational numbers

root+root 5=p/q

squaring on both the sides (root2+root 5) square =(p/q) square

root 2 square +root 5 square +2 (root 5× root 2 )

root 10=p square -7q square /2q

hence it is a irrational number

hence proved

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