Question

solve √45×√20 and state what type of number is this ( rational or irrational no.

Answer 1

Hi friend
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Your answer
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$\sqrt{45} \times \sqrt{20} \\ = \sqrt{45 \times 20} \\ = \sqrt{900} \\ = \sqrt{30 \times 30} \\ = 30$
SO IT IS RATIONAL.

HOPE IT HELPS

#ARCHITECTSETHROLLINS

Answer 2

root45×root20

=root45×20

=root9×5×5×4

=3×2×5

=30

30 is rational number

so

root45×root20 is a rational number