Solving Radical Equations and Concepts

This video tutorial covers solving radical equations and inequalities, focusing on isolating and eliminating radicals. It includes examples of solving equations with square and third roots, checking solutions for accuracy, and identifying extraneous solutions. The tutorial provides practice problems and emphasizes the importance of verifying solutions, especially when variables appear both inside and outside radicals.

What is the first step in solving a radical equation?

• Multiply both sides by a number

• Combine like terms

• Isolate the radical

• Add a constant to both sides

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CCSS.HSA.REI.A.2

What is the result of squaring both sides of an equation with a square root?

• The equation becomes linear

• The square root is eliminated

• The equation becomes a fraction

• The equation becomes a logarithm

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CCSS.HSA.REI.A.2

How do you eliminate a cube root in an equation?

• Raise both sides to the third power

• Take the reciprocal

• Square both sides

• Subtract the cube root

Tags

CCSS.HSA.REI.A.2

Why is it important to check your solutions when solving radical equations?

• To simplify the equation

• To verify the equation is linear

• To find the derivative

• To ensure the solution is not extraneous

In the equation 2x - 5 = 3, what is the first step to isolate the cube root?

• Divide both sides by 2

• Subtract 5 from both sides

• Multiply both sides by 2

• Add 5 to both sides

Tags

CCSS.HSA.REI.A.2

What should you do if you find a variable both inside and outside a radical?

• Combine them into one term

• Isolate the radical and solve separately

• Ignore the variable outside the radical

• Add them together

Tags

CCSS.HSA.REI.A.2

What is an extraneous solution?

• A solution that is always positive

• A solution that is always negative

• A solution that does not satisfy the original equation

• A solution that satisfies the original equation

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CCSS.HSA-REI.B.4B

What is the purpose of foiling when solving equations with squared terms?

• To expand the binomial

• To find the derivative

• To simplify the equation

• To eliminate the radical

Tags

CCSS.HSA.REI.A.2

When solving a quadratic equation derived from a radical equation, what method can be used?

• Using logarithms

• Factoring

• Completing the square

• Graphing

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CCSS.HSA.REI.A.2

How can you verify if a solution is extraneous?

• By checking if it satisfies the original equation

• By checking if it is a whole number

• By checking if it is a positive number

• By checking if it is a negative number

Tags

CCSS.HSA.REI.A.2