Solving Equations with Perfect Squares and Cubes

The video tutorial covers solving equations involving perfect squares and cubes. It begins with an introduction to the topic, followed by examples of solving equations with perfect squares, such as finding the side length of a square with a given area. The tutorial then moves on to solving equations with perfect cubes, using a cube-shaped terrarium as an example. Additional examples are provided to reinforce the concepts, including handling non-perfect squares and cubes by leaving answers in radical form.

What is the main goal of the lesson?

• To understand the concept of area

• To learn about different shapes

• To calculate the volume of different objects

• To solve equations involving perfect squares and cubes

Tags

CCSS.5.MD.C.5B

CCSS.6.G.A.2

If a square has an area of 25 square feet, what is the length of one side?

• 3 feet

• 5 feet

• 6 feet

• 4 feet

Tags

CCSS.8.EE.A.2

Why can't the side length of the square be negative?

• Because distance cannot be negative

• Because the area would be negative

• Because the square root of a negative number is imaginary

• Because it would result in a complex number

Tags

CCSS.8.EE.A.2

What is the inverse operation of squaring a number?

• Subtraction

• Cubing

• Square root

• Addition

Tags

CCSS.8.EE.A.2

What is the volume of Kyle's cube-shaped terrarium?

• 216 cubic feet

• 125 cubic feet

• 343 cubic feet

• 512 cubic feet

Tags

CCSS.8.EE.A.2

What is the side length of Kyle's terrarium if the volume is 343 cubic feet?

• 8 feet

• 7 feet

• 6 feet

• 5 feet

Tags

CCSS.8.EE.A.2

What is the inverse operation of cubing a number?

• Subtraction

• Cubed root

• Square root

• Addition

Tags

CCSS.8.EE.A.2

If x squared equals 50, how can we express x?

• x = √50

• x = ±50

• x = ±√50

• x = 50

Tags

CCSS.8.EE.A.2

What do we do when the number is not a perfect square?

• Leave it in radical form

• Convert it to a fraction

• Approximate the value

• Ignore the number

If x cubed equals 37, how can we express x?

• x = √37

• x = 3√37

• x = ±3√37

• x = 37

Tags

CCSS.8.EE.A.2