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8 grade maths

How do you simplify √128?

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1 Year agoGrade
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1 Answer

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ApprovedApproved Tutor Answer1 Year ago

To simplify the square root of 128, follow these steps:

Breaking Down the Number

First, factor 128 into its prime components:

  • 128 = 64 × 2
  • 64 = 8 × 8
  • 8 = 4 × 2
  • 4 = 2 × 2

Identifying Perfect Squares

From the factorization, we can see that 64 is a perfect square:

  • √64 = 8

Combining the Results

Now, we can rewrite √128 using its factors:

√128 = √(64 × 2) = √64 × √2

Simplifying Further

Now substitute the value of √64:

√128 = 8√2

Final Answer

The simplified form of √128 is 8√2.