Mathematics
Grade10
Easy

Question

Rewrite the expression square root of 45 by using product property.

  1. 3 square root of 5
  2. 3 square root of 3  
  3. 5 square root of 3
  4. 5 square root of 5

hintHint:

Irrational numbers are the set of real numbers that cannot be expressed in the form of a fraction, p/q where p and q are integers. The denominator q is not equal to zero (q ≠ 0). Also, the decimal expansion of an irrational number is neither terminating nor repeating.

The correct answer is: 3 square root of 5


    We have to rewrite √45 into a different expression.
    We have, √45 = √(3×3×5) = 3√5.
    Hence, the correct option is A.

    The square root of a non perfect square number is an irrational number.

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