chapter 3 lesson 8a: square roots...2016/10/11 · 11a ch3 lesson 8a squareroots.notebook october...
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11a Ch3 Lesson 8a SquareRoots.notebook October 11, 2016
WarmUp:Calculate the following in scientific notation
Chapter 3 Lesson 8a: Square Roots
1.) (5.2 x 108) (3.6 x 107)
2.) (4.8 x 105) ÷ (1.6 x 102)
Perfect SquaresComplete the following table...
12 = ____
22 = ____
32 = ____
42 = ____
52 = ____
62 = ____
72 = ____
82 = ____
92 = ____
102 = ____
112 = ____
122 = ____
132 = ____
142 = ____
152 = ____
162 = ____
172 = ____
182 = ____
192 = ____202 = ____
212 = ____222 = ____232 = ____242 = ____252 = ____
11a Ch3 Lesson 8a SquareRoots.notebook October 11, 2016
Words:The square root of a number is
_______________________________________________one of its two equal factors
Symbols:If x2 = y, then x is the square root of y.
Example:If 52 = 25, then 5 is the square root of 25.
Every positive number has both a ______________ and
a ________________ square root.
A radical sign ______ is used to indicate the principal
square root (the positive root).
If n2 = a, then n = +_ √ a
11a Ch3 Lesson 8a SquareRoots.notebook October 11, 2016
Examples:
1.) √64 2.) √1.21
3.) 2536 4.) √16
+_
Got it? Now you try...
a.) 9 16
b.) √0.81
c.) 49 d.) √100
+_
11a Ch3 Lesson 8a SquareRoots.notebook October 11, 2016
Example: Equations with exponents/radicals
5.) Solve t2 = 169. Check your solutions.
Got it? Do these to find out...
e.) 289 = a2
f.) m2 = 0.09
g.) y2 = 425
11a Ch3 Lesson 8a SquareRoots.notebook October 11, 2016
Homework ~