Mathematics
Grade10
Easy

Question

Rewrite square root of 128 into simplest form

  1. 6 square root of 2
  2. 2 square root of 2
  3. 4 square root of 2
  4. 2 cubed square root of 2

hintHint:

Square root of a number is a value, which on multiplication by itself gives the original number.

The correct answer is: 2 cubed square root of 2


    Here, we have to write the simplest form of √128 .
    Simples form of √128 = √( 2 × 2 × 2 × 2 × 2 × 2 × 2 ) .
    = √27
    = √ 26 × 2
    = 23 √2
    Hence, the correct option is (d).

    When we multiply 23√2 by itself i.e 23√2 × 23√2 .we get 128.

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