Solving Rational Equations: Key Concepts and Techniques

The video tutorial introduces solving rational equations, focusing on cross-multiplication to isolate and solve for x. It provides a step-by-step guide, including factoring, making denominators the same, and simplifying equations. Two example problems are solved, demonstrating the process of handling different denominators and simplifying to find the solution.

What is the first step in solving a rational equation?

• Combine like terms

• Simplify the equation

• Multiply both sides by the denominator

• Factor everything

Tags

CCSS.HSA.REI.A.2

What does cross multiplying help to achieve in solving rational equations?

• Isolate x to solve for it

• Eliminate x from the equation

• Ensure the denominators are the same

• Combine like terms

Tags

CCSS.HSA.REI.A.2

What do you do after ensuring the denominators are the same?

• Add the numerators

• Divide both sides by x

• Subtract the denominators

• Multiply the equation by x

Tags

CCSS.HSA.REI.A.2

After simplifying the left side of the equation, what is the next step?

• Divide by the constant term

• Multiply by the denominator of the left

• Add the constant term

• Subtract the constant term

Tags

CCSS.7.EE.B.4A

How do you eliminate the fractions in the equation?

• Combine like terms

• Divide both sides by x

• Multiply both sides by the left denominator

• Subtract x from both sides

What is the result of solving the first equation?

• x = -8

• x = 6

• x = 8

• x = -6

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

How can you make the denominators the same in the second problem?

• Multiply by x + 3

• Subtract x from both sides

• Add x to both sides

• Multiply by x

Tags

CCSS.HSA.REI.A.2

What is the correct way to simplify the left side of the second equation?

• Multiply by x

• Divide by x + 3

• Combine like terms

• Subtract 1 from both sides

What is the final step in solving the second problem?

• Combine like terms

• Multiply both sides by the denominator

• Divide both sides by x

• Add x to both sides

Tags

CCSS.HSA.REI.A.2

What is the solution to the second equation?

• x = -2

• x = -4

• x = 4

• x = 2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6