Five-Minute Check (over Lesson 6–3)
CCSS
Then/Now
New Vocabulary
Key Concept: Definition of nth Root
Key Concept: Real nth Roots
Example 1: Find Roots
Example 2: Simplify Using Absolute Value
Example 3: Real-World Example: Approximate Radicals
• nth root
• radical sign
• index
• radicand
• principal root
Problem 1
A
Finding All Real Roots
A
Find Roots
= ±4x4
Answer: The square roots of 16x8 are ±4x4.
Find Roots
Answer:
Find Roots
Answer:
A. Simplify
A. ±3x6
B. ±3x4
C. 3x4
D. ±3x2
.
C. Simplify
A. 2xy2
B. ±2xy2
C. 2y5
D. 2xy
.