3. 3 x 2 x 5 x 7 =
When Multiplying Or Dividing
Remember:
Whole Numbers ( Rational Numbers )
With Whole Numbers
And Radicals With Radicals.
3 5 x 2 7 =
6 35
4. 5 5
10 15
Whole Numbers ( Rational Numbers )
With Whole Numbers
And Radicals With Radicals.
2 3
5
1
5
1
5 5
1
=
5. = 2 10
Never Leave A Number Under A
Radical Sign That Has A
Perfect Square As A Factor.
ab = a x b
= 5 2
40 = 4 10
x
50 25 2
= x
6. Never Leave A Radical In The
Denominator Of A Fraction
To Simplify This Expression We Rationalize
The Denominator. Multiply The Denominator
By Something That Gives Us A Rational
Answer. We Can Usually Multiply It By It’s
Self. Multiply The Top By The Same Thing.
3
5
=
3 5
5
5
5
x
x
10. Find the geometric mean
between 3 and 15
3
X
=
X
15
X² = 45
X² = 45
X = 3 5
X = 6.7
11. 8 is the geometric mean between
2 and what number
2
8
= 8
X
2X = 64
X = 32
12. A
B
The Altitude Drawn To The
Hypotenuse In A Right Triangle
Divides The Hypotenuse Into 2
Parts. The Altitude Is The Geometric
Mean Between The 2 Parts.
A
Alt
= Alt
B
