Foiling radicals

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How Do We Multiply Radical Expressions?

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Foiling radicals

  1. 1. How Do We Multiply RadicalHow Do We Multiply RadicalExpressions?Expressions?12
  2. 2. How Do We Multiply RadicalHow Do We Multiply RadicalExpressions?Expressions?Do Now:3 3 38 27 216 6× = =
  3. 3. You can add or subtract radicalslike monomials. You can alsosimplify radicals by using theFOIL method of multiplyingbinomials.Ex: (3 6 − 2 3)(4 + 3)Let us try one.
  4. 4. (3 6 − 2 3)(4 + 3)3 6F⋅4 + 3 6O⋅ 3 − 2 3I⋅ 4 − 2 3L⋅ 312 6 + 3 32⋅ 2 − 8 3 − 2 ⋅312 6 + 9 2 − 8 3 − 6Since there are no like terms, youcan not combine.
  5. 5. Lets do another one.(8 − 5 3)(8 + 5 3)8⋅ 8 + 8⋅ 5 3 − 5 3 ⋅8 − 5 3 ⋅5 364 + 40 3 − 40 3 − 25⋅ 364 − 75−11
  6. 6. Simplify the product .( )( )2 3 3 9 7 3+ −18=18 13 3 63= + −45 13 3= − +14 3− 27 3+ 21 3 3− × ×
  7. 7. Try on Your OwnTry on Your Own1.2.)71()71( +−)52()23( +−
  8. 8. This powerpoint was kindly donated towww.worldofteaching.comhttp://www.worldofteaching.com is home to over athousand powerpoints submitted by teachers. This is acompletely free site and requires no registration. Pleasevisit and I hope it will help in your teaching.

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