I’m not sure but maybe it’s the last option? Because” quadrilateral” means “a figure with 4 sides”
And a trapezoid means a figure that has sides that are all different
Subtract the left side, then factor.
0 = 3x^2 -2x -8
(x-2)(3x+4) = 0
The solutions are those values of x that make the factors zero.
x = 2, -4/3
The denominator of the second fraction is the difference of squares, so can be factored using the formula for that.
(n^2 -4) = (n -2)(n +2)
Now, you will note that the second fraction has a numerator that is equal to one of the factors in the denominator. In other words, the whole fraction can be simplified to ...
(n +2)/((n +2)(n -2)) = 1/(n -2) . . . . with the restriction n≠-2
This reduced form of the fraction has the same denominator as the first fraction, so you can say that the lowest common denominator is that: (n -2).
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If there is some reason you don't want to reduce the second fraction, the lowest common denominator will be (n -2)(n +2).
1
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2 1 (6)
-------- = ---------- = 3 (answer) 1/6 divides into 1/2 3 times.
1 2 (1)
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6