Rational Expressions

Simplify the expression

• 1

• -1

• Can't be simplified

Simplify

• (x-9)/(x+9)
• 1/(x-9)
• (x+9)
• 1/(x+9)

Which value of x makes the expression undefined?

• -2
• 2
• -6
• -3

Simplify. 

• (x+6)/(x+4)
• (x+6)(x+4)
• (x+6)
• (x+6)/(x-5)

• -1

• -6 and -1

• -1 and 6

• 1 and -6

What value(s) make the expression undefined?

• x = - 3 and x = 4

• x = 3 and x = - 4

• x = 3 only

• x = - 4 only

What is a rational expression?

• A quotient of two polynomials.

• The difference between two polynomilas.

• The sum of two polynomials.

• The product of two polynomials.

What mathematical operations can be done to rational expressions?

• All mathematical operations.

• Some mathematical operations.

When adding rational expressions, you must add numerators together and denominators together.

• True

• False

• None