91影视

use the GRAPH or TABLE feature of a graphing utility to determine if the subtraction has been performed correctly. If the answer is wrong, correct it and then verify your correction using the graphing utility. $$\frac{x^{2}+4 x+3}{x+2}-\frac{5 x+9}{x+2}=x-2, x \neq-2$$

Determine whether each statement 鈥渕akes sense鈥� or 鈥渄oes not make sense鈥� and explain your reasoning. Simplifying rational expressions is similar to reducing fractions.

Will help you prepare for the materia$l covered in the next section. Subtract: $$\frac{7}{9}-\frac{1}{9}$$

use the GRAPH or TABLE feature of a graphing utility to determine if the subtraction has been performed correctly. If the answer is wrong, correct it and then verify your correction using the graphing utility. $$\frac{x^{2}-13}{x+4}-\frac{3}{x+4}=x+4, x \neq-4$$

Determine whether each statement 鈥渕akes sense鈥� or 鈥渄oes not make sense鈥� and explain your reasoning. I cannot simplify rational expressions without knowing how to factor polynomials.

Subtract: \(\frac{13}{15}-\frac{8}{45}\) (Section 1.2, Example 9)

Will help you prepare for the materia$l covered in the next section. Add: $$\frac{2 x}{3}+\frac{x}{3}$$

Determine whether each statement 鈥渕akes sense鈥� or 鈥渄oes not make sense鈥� and explain your reasoning. The rational expressions $$\frac{7}{14 x} and \frac{7}{14+x}$$ an both be simplified by dividing each numerator and each denominator by 7.

Factor completely: \(81 x^{4}-1\)

Will help you prepare for the materia$l covered in the next section. Simplify: $$\frac{x^{2}-6 x+9}{x^{2}-9}$$