IM3 module 9 flashcard

Front

What is a rational expression?

Back

A rational expression is a fraction where the numerator and the denominator are both polynomials.

Front

How do you divide rational expressions?

Back

To divide rational expressions, multiply the first expression by the reciprocal of the second expression.

Front

What does it mean for an expression to be undefined?

Back

An expression is undefined when the denominator equals zero.

Front

How do you find excluded values in a rational expression?

Back

Set the denominator equal to zero and solve for the variable.

Front

What is the solution to the equation x + 3 = 0?

Back

x = -3.

Front

What is the solution to the equation 2x - 6 = 0?

Back

x = 3.

Front

What is the solution to the equation 3x + 9 = 0?

Back

x = -3.

Front

What is the solution to the equation 7x = 42?

Back

x = 6.

Front

What is the solution to the equation 5x + 15 = 0?

Back

x = -3.

Front

What is the solution to the equation 4x - 24 = 0?

Back

x = 6.