Day 138 – April 2

Algebra: Chapter 11, Lesson 4, page 495.

Multiplying Radical Expressions

Remember that the `sqrt(ab) = sqrt(a)⋅sqrt(b)` and you can’t go wrong. Make sure that you simplify and identify perfect squares. Practice makes perfect. The steps can be stated as:

  • Multiplying
  • Factoring to find perfect square factors
  • Identifying perfect squares
  • Simplify

For example:

`sqrt(3x^2)⋅sqrt(9x^3)`

This becomes `sqrt(3⋅9⋅x^5) = sqrt(3⋅9⋅x^4⋅x)`

re-arraigning terms it looks like =`sqrt(9)⋅sqrt(x^4)⋅sqrt(3)⋅sqrt(x)`

and that finally simplifies to = `3x^2⋅sqrt(3x)`.

Click this purplemath.com link for some more explanation and practice!

Two of tonight’s homework problems solved by MrE are here! Just click it.

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Algebra 1a: Chapter 2 Review!

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