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Alexus [3.1K]
3 years ago
7

I WILL GIVE YOU 40 POINTS PLEASE HELP (2)/(x^2-9) - (3x)/( x^2-5x+6) please show work

Mathematics
1 answer:
mars1129 [50]3 years ago
4 0

Answer:

\frac{-3x^2-7x-4}{x^3-2x^2-9x+18}

Step-by-step explanation:

\frac{2}{x^2-9}-\frac{3x}{x^2-5x+6}

Factor x²-9 and x²-5x+6.

\frac{2}{\left(x+3\right)\left(x-3\right)}-\frac{3x}{\left(x-2\right)\left(x-3\right)}

Least common multiple of (x+3), (x-3), (x-2), and (x-3) is (x+3), (x-3), and (x-2).

Adjust the fractions based on LCM.

\frac{2\left(x-2\right)}{\left(x+3\right)\left(x-3\right)\left(x-2\right)}-\frac{3x\left(x+3\right)}{\left(x-2\right)\left(x-3\right)\left(x+3\right)}

Subtract the fractions since denominators are equal.

\frac{2\left(x-2\right)-3x\left(x+3\right)}{\left(x+3\right)\left(x-3\right)\left(x-2\right)}

Expand.

\frac{-3x^2-7x-4}{x^3-2x^2-9x+18}

The fraction can be in factored form.

\frac{-\left(x+1\right)\left(3x+4\right)}{\left(x-2\right)\left(x+3\right)\left(x-3\right)}

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Answer:

the exact length of the midsegment of trapezoid JKLM  = \mathbf{ = 3 \sqrt{5} } i.e 6.708 units on the graph

Step-by-step explanation:

From the diagram attached below; we can see a graphical representation showing the mid-segment of the trapezoid JKLM. The mid-segment is located at the line parallel to the sides of the trapezoid. However; these mid-segments are X and Y found on the line JK and LM respectively from the graph.

Using the expression for midpoints between two points to determine the exact length of the mid-segment ; we have:

\mathbf{ YX = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2} }

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