Question

State whether 20 root multiplied by 45 root is rational or irrational number

Answer 1

Answer:

i think its a irrartional no nnnnnnnnnn

Answer 2

Hey mate ,

= √20 × √45

= 2√5 ×3√5

= 6×√5×√5

= 6×5

= 30

Since we know 30 is a rational number .

Hence product of root 20 and root 45 is rational .

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