Sec 6.5-Focus

# Sec 6.5-Focus - 3 Perform the operation Simplify your...

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Adding and Subtracting Unlike Fractions page 6.5 - 13 Section 6.5 Focus Exercises 1. Build up each fraction so that it has the new (target) denominator. SHOW ALL STEPS. a) Build up both 5 8x 2 and x + 1 6x 3 b) Build up both 3x + 1 x + 4 and 9 5x to have a new denominator of 24x 3 . to have a new denominator of 5x(x + 4). c) Build up both x + 2 x(x + 5) and 3x + 1 (x 4)(x + 5) to have a new denominator of x(x – 4)(x + 5). d) Build up both x – 1 (x – 2)(x + 2) and x + 3 (x 2) 2 to have a new denominator of (x + 2)(x 2) 2 . 2. For each pair of fractions, find a common target denominator; then, build up each fraction so that it has the new (target) denominator. You may need to factor the denominator(s) first. a) 6 x and x x – 4 b) x + 1 x 2 2x and 6 x c) x x 2 4 and 3 x 2 + 2x d) x + 1 x 2 + 2x 8 and 1 x 2 + 4x

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Adding and Subtracting Unlike Fractions page 6.5 - 14
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Unformatted text preview: 3. Perform the operation. Simplify your result, if possible. (Remember to write the denominators in factored form, even if the only monomial factor is 1.) a) x + 3 4x 2 + 5 12x b) x x + 12 – 2 x c) 2x x – 1 + x + 3 x + 1 d) x x – 4 – x + 12 x 2 – 4x e) x 2 + 3 x 2 – 9 + 2 x + 3 f) x – 1 3x + 6 – x + 4 x 2 + 2x Adding and Subtracting Unlike Fractions page 6.5 - 15 4. Perform the operation. Simplify your result, if possible. (Remember to write the denominators in factored form, even if the only monomial factor is 1.) a) x – 8 x 2 + 5x – 6 + 1 x 2 – x b) 10 x 2 – 25 – 7 x 2 + 3x – 10 c) 7x – 2 x 2 – 9 + 5x + 4 9 – x 2 d) x 2 – 20 x 2 – 5x – x – 10 5x – x 2...
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Sec 6.5-Focus - 3 Perform the operation Simplify your...

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