Transcript
Page 1: Multiplying and Dividing Radicals' - Math with Mr. K.killornmath.weebly.com/uploads/3/0/9/5/30958945/5.2_-_mu... · 2019. 10. 4. · 5.2 Mulitplying and Dividing Radicals(Solutions).notebook

5.2 ­ Mulitplying and Dividing Radicals(Solutions).notebook October 19, 2015

5.2 ­ 

MULTIPLYINGAND DIVIDING RADICAL EXPRESSIONS

Multiplying and Dividing Radicals' Rules

1. Simplify the radical before multiplication.

2. The radicals must have the same index.

3. Multiply/Divide the coefficients, then multiply/divide the radicands (Underneath the root).

Page 2: Multiplying and Dividing Radicals' - Math with Mr. K.killornmath.weebly.com/uploads/3/0/9/5/30958945/5.2_-_mu... · 2019. 10. 4. · 5.2 Mulitplying and Dividing Radicals(Solutions).notebook

5.2 ­ Mulitplying and Dividing Radicals(Solutions).notebook October 19, 2015

To Multiply:

where: m, n, a, b  are real numbers

Example 1: Simplify the expression

Page 3: Multiplying and Dividing Radicals' - Math with Mr. K.killornmath.weebly.com/uploads/3/0/9/5/30958945/5.2_-_mu... · 2019. 10. 4. · 5.2 Mulitplying and Dividing Radicals(Solutions).notebook

5.2 ­ Mulitplying and Dividing Radicals(Solutions).notebook October 19, 2015

To Divide:

where: m, n, a, b  are real numbers

Page 4: Multiplying and Dividing Radicals' - Math with Mr. K.killornmath.weebly.com/uploads/3/0/9/5/30958945/5.2_-_mu... · 2019. 10. 4. · 5.2 Mulitplying and Dividing Radicals(Solutions).notebook

5.2 ­ Mulitplying and Dividing Radicals(Solutions).notebook October 19, 2015

RATIONALIZING DENOMINATORS

Rationalizing ­ The process when there is a radical in the denominator, both the numerator and denominator must be multiplied by an expression that will produce a rational denominator.

(ie.  Multiply the top and bottom of a fraction to eliminate the radical on the bottom)

Example 2:  Simplify and Rationalize the following expressions.

Page 5: Multiplying and Dividing Radicals' - Math with Mr. K.killornmath.weebly.com/uploads/3/0/9/5/30958945/5.2_-_mu... · 2019. 10. 4. · 5.2 Mulitplying and Dividing Radicals(Solutions).notebook

5.2 ­ Mulitplying and Dividing Radicals(Solutions).notebook October 19, 2015

c) d) 2√56√40

If the denominator is a binomial (2 terms), we must rationalize using it's CONJUGATE.

Conjugates ­  2 binomial factors whose product is the difference of 2 squares.

Page 6: Multiplying and Dividing Radicals' - Math with Mr. K.killornmath.weebly.com/uploads/3/0/9/5/30958945/5.2_-_mu... · 2019. 10. 4. · 5.2 Mulitplying and Dividing Radicals(Solutions).notebook

5.2 ­ Mulitplying and Dividing Radicals(Solutions).notebook October 19, 2015

Suppose a and b are radicals:

e)

Page 7: Multiplying and Dividing Radicals' - Math with Mr. K.killornmath.weebly.com/uploads/3/0/9/5/30958945/5.2_-_mu... · 2019. 10. 4. · 5.2 Mulitplying and Dividing Radicals(Solutions).notebook

5.2 ­ Mulitplying and Dividing Radicals(Solutions).notebook October 19, 2015

f)

g)

Page 8: Multiplying and Dividing Radicals' - Math with Mr. K.killornmath.weebly.com/uploads/3/0/9/5/30958945/5.2_-_mu... · 2019. 10. 4. · 5.2 Mulitplying and Dividing Radicals(Solutions).notebook

5.2 ­ Mulitplying and Dividing Radicals(Solutions).notebook October 19, 2015

h)

Multiply and Dividing Worksheets

p. 291 ­ #17


Top Related