Simplifying Square Roots and Absolute Values

The video tutorial explains how to simplify square roots, especially those containing variables. It emphasizes the importance of using absolute values when dealing with variables raised to odd powers to ensure positive results. Through examples, the tutorial demonstrates the process of simplifying square roots using prime factorization and highlights the need for absolute values in certain cases. The tutorial covers both basic and advanced examples, providing detailed steps for clarity.

Why is the absolute value necessary when simplifying the square root of x squared?

• To ensure the result is always positive

• To ensure the result is always negative

• To make the calculation easier

• To avoid using variables

Tags

CCSS.HSF-IF.C.8B

In the expression √(16x^4y^6), why is an absolute value needed for y?

• Because x is a variable

• Because the exponent on y is even

• Because y is always positive

• Because the exponent on y is odd

Tags

CCSS.8.EE.A.2

What is the simplified form of √(16x^4y^6)?

• 4x^2y^3

• 4|x^2|y^3

• 4|x^2y^3|

• 4x^2|y^3|

Tags

CCSS.8.EE.A.2

What is the prime factorization of 54 used for in the simplification process?

• To identify perfect square factors

• To convert it into a decimal

• To find the greatest common divisor

• To simplify the variable terms

In the expression √(54x^4y^7), which part is not a perfect square?

• x^4

• 54

• y^7

• None of the above

When simplifying √(36x^6), why is an absolute value required for x?

• Because the exponent on x is odd

• Because 36 is a perfect square

• Because x is a constant

• Because the exponent on x is even

What is the simplified form of √(36x^6)?

• 6|x^3|

• 6x^3

• 6x^2

• 6|x^2|

In the expression √(192x^2y^3z^12), which part is a perfect square?

• 192

• x^2

• y^3

• z^12

How many factors of 2 are there in the prime factorization of 192?

• Six

• Seven

• Five

• Four

What is the final simplified form of √(192x^2y^3z^12)?

• 8xyz^6√3y

• 8|xy|z^6√3y

• 8x^2y^3z^6

• 8|x^2y^3|z^6