Solving a rational Equation

The video tutorial explains how to solve a proportion or rational equation using cross multiplication. It begins by introducing the concept of proportions and the method of cross multiplication. The tutorial then demonstrates how to apply cross products to solve for X squared. It further explains the introduction of square roots to solve the equation, emphasizing the need to consider both positive and negative values. The tutorial concludes with the final solution, X = ± 2, summarizing the method used.

What is a proportion in mathematical terms?

• A comparison of two numbers

• A comparison of two ratios

• A sum of two numbers

• A difference between two ratios

What mathematical operation is used to solve proportions?

• Addition

• Subtraction

• Cross multiplication

• Division

When solving for a variable squared, what operation is introduced?

• Addition

• Subtraction

• Multiplication

• Square root

Why must both positive and negative roots be considered when solving for a squared variable?

• Because they are always equal

• Because they represent different solutions

• Because they cancel each other out

• Because they are both positive

What is the final solution for the equation X^2 = 4?

• X = ±2

• X = 2

• X = -2

• X = 0