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shusha [124]
3 years ago
5

Write a simplified polynomial expression in standard form to represent the area of the rectangle below.

Mathematics
2 answers:
JulijaS [17]3 years ago
6 0
Given:
Rectangle shape.
One side: 5x + 2
other side: x - 4

Area = length * width
Area = (5x+2)(x-4)
A = 5x(x-4) +2(x-4)
A = 5x² - 20x + 2x - 8
A = 5x² - 18x - 8
Sophie [7]3 years ago
6 0

Answer:

its ........................................................C

Step-by-step explanation:

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Comment

f(x) = g(x) I don't think has any meaning for this question. I will just solve the equation.

Solution

7x - 12 = - 3x  + 10                    Add 3x to both sides

7x + 3x  -12 = - 3x + 3x +10    Combine

10x - 12 = 10                            Add 12 to both sides

10x -12 + 12 = 10 + 12              Combine

10x = 22                                  Divide by 10

10x/10 = 22/10

x = 2.2

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