To start, you need to subtract 4x from both sides, that way, x is one one sid of the equation.
Area of Rectangle = length times width
lets say length = 2x-4
width = x+5
Note: you can switch these around, width could be 2x-4 and length could be x+5, it doesnt matter.
With that being said:
length * width = area
(2x-4)(x+5)=area
FOIL (First Outer Inner Last)

Simplify:
Step-by-step explanation:
8√383 by √3√333.
8√3⋅√3√383⋅33
Combine and simplify the denominator.
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8√33833
The result can be shown in multiple forms.
Exact Form:
8√33833
Decimal Form:
4.61880215
<span>1+3+5 = 9
72/9 = 8
1 x 8 = 8
3 x 8 = 24
5 x 8 = 40
</span><span>72 in a ratio of 1:3:5 = 8:24:40</span>
Answer:
80.56
Step-by-step explanation:
To find the rectangle area you just multiply its length by its width:
17 * 4 = 68
You have to sum two semicircles on top of that. Since it is 2 semicircles you can just calculate one circle. Using the circle area formula: 
Since the radius (r) is 2 and
is 3.14, you have the following equation:
A = 3.14 * 2² ==> A = 3.14 * 4 ==> A = 12.56 <em>(A is Area)</em>
Sum the rectangle's area with the circle's area:
12.56 + 68 = 80.56
And vuoila! there's your answer.