Simplifying Square Roots and Exponents

The video tutorial explains how to simplify square roots by identifying perfect square factors in the radicand. It covers two examples: simplifying the square root of 49x^18 and negative three times the square root of 121x^34. The tutorial emphasizes that when the exponent on a variable is even, it is a perfect square, and no absolute value is needed if variables are positive. The process involves breaking down the radicand into perfect square factors and simplifying the expression.

What is a perfect square factor?

• A number that is a prime number

• A number that can be divided by 2

• A number that is a product of two equal integers

• A number that is a product of two different integers

Tags

CCSS.8.EE.A.2

What is the simplified form of the square root of 49?

• 7

• 5

• 3

• 9

How do you simplify x^18 under a square root?

• x^3

• x^18

• x^6

• x^9

When simplifying square roots, when is an absolute value needed?

• When the base is positive

• When the base is negative

• When the exponent is odd

• When the exponent is even

Tags

CCSS.8.EE.A.2

What is the simplified form of the square root of 121?

• 10

• 9

• 11

• 12

How do you simplify x^34 under a square root?

• x^17

• x^34

• x^16

• x^18

What is the simplified expression for negative three times the square root of 121?

• -39

• -36

• -33

• -30

Why is no absolute value needed in the final expression of negative 33x^17?

• Because the variables are positive

• Because the exponent is zero

• Because the exponent is even

• Because the base is negative

What is the importance of knowing whether variables are positive when simplifying square roots?

• It alters the exponent of the expression

• It changes the base of the expression

• It affects whether an absolute value is needed

• It determines if the expression is a perfect square

What is the final simplified expression for the square root of 49x^18?

• 49x^18

• 7x^9

• 7x^18

• 49x^9