Making sense of subtracting Rational Expressions

The video tutorial covers the process of multiplying denominators and finding the least common denominator in fractions. It explains how to simplify algebraic expressions by factoring trinomials and identifying common denominators in algebraic fractions. The tutorial also addresses handling subtraction in fractions and applying the distributive property. The session concludes with a final simplification of expressions, emphasizing the importance of factoring and simplification in solving algebraic problems.

What is the least common denominator of 6 and 3?

• 12

• 18

• 6

• 9

When simplifying algebraic expressions, what is the first step you should take?

• Multiply the denominators

• Divide the numerators

• Factor or simplify the expression

• Add the numerators

In the expression X + 3 * X + 2, what is a common factor?

• X + 5

• X + 1

• X + 4

• X + 3

What is a common mistake when performing subtraction in algebraic fractions?

• Forgetting to multiply the numerators

• Not factoring the denominators

• Adding the denominators

• Not carrying the negative sign

What is the result of applying the distributive property to 1 - 2(X + 2)?

• 1 - 2X + 4

• 1 - 2X - 4

• 1 + 2X + 4

• 1 + 2X - 4