Add and Subtract Rational Expressions Section 8.5 Add and Subtract Rational Expressions

California Standard: 7.0: Students add, subtract, multiply, divide, reduce, and evaluate rational expressions with monomial and polynomial denominators and simplify complicated rational expressions including those with negative exponents in the denominator.

By following instructions, students will be able to: OBJECTIVE(S): By following instructions, students will be able to: add and subtract rational expressions.

Adding or Subtracting Rational Expression with LIKE Denominators Let a, b, and c be expressions with . Addition: Subtraction:

EXAMPLE 1: Add/Subtract: a) b)

U-TRY#1: Perform the indicated operation and simplify. a) c) b) d)

Adding or Subtracting with UNLIKE Denominators LET A, B, C, AND D BE POLYNOMIALS, WITH AND ADD: SUBTRACT:

EXAMPLE 2: Add:

EXAMPLE 3: Subtract:

U-TRY#2: Perform the indicated operation and simplify. a) b) c)

EXAMPLE 4: Simplify:

U-TRY#3: Perform the indicated operation and simplify. a) b)

HOMEWORK Sec 8.5 WS