Adding, Subtracting, Multiply and Divide Rational Expressions

Julie has factored the numerators and denominators and multiplied by the reciprocal (keep it, flip it, multiply it).  She must be…

• Adding or Subtracting Rational Expressions

• Multiplying Rational Expressions

• Dividing Rational Expressions

Find the LCD of the following rational numbers

5/4 and 2/3

• 12

• 5

• 24

• 7

Find the LCD of the following rational numbers

2/5 and 3/10

• 10

• 5

• 15

• 20

Find the LCD of the following rational expression

5/(x+8) and 2x/(x-3)

• (x+8)(x-3)

• 8x(x+2)

• (x²+3x+24)

Find the LCD of the following rational expressions

2x/(x+1) and (x²-1)

• (x+1)(x-1)

• (x+1)² (x-1)

• (2x+2)

To simplify a rational expression, I should

• Eliminate common terms in the numerator and denominator.

• Combine like terms in the numerator and denominator.

• Factor the numerator and denominator and eliminate common factors.

• Find an LCD.

Multiply the Rational Expression

• A

• B

• C

• D

Divide the Rational Expression

• A

• B

• C

• D

Find the product

• A

• B

• C

• D

Multiply the Rational Expression

• A.

• B.

• C.

• D.