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zhenek [66]
3 years ago
11

The area of a rectangle is x 2 – 3x – 28. If thelength is x + 4, find the width.

Mathematics
1 answer:
Hatshy [7]3 years ago
7 0

Answer:

-4 square units

Step-by-step explanation:

a = l × b

x2 - 3x - 28 = (x +4)(×)

x2 - 3x - 28 = x2 + 4x

-3x - 28 - 4x = 0

-7x - 28 = 0

-7x = 28

x = -4

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3 years ago
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Crank
The factors of 7are -1 and 7 or 1 and -7, the factors of 14 are 1, 2, 7, and 14, or -1,  -2, -7,-14. so the list of potential zeros are: 1/1, 1/2, 1/7, 1/14, 7/1,7/2, 7/7, 7/14, which can be simplified into 1, 1/2,1/7, 1/14, 7, 7/2
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reference: 
http://www.sparknotes.com/math/algebra2/polynomials/section4.rhtml

3 0
3 years ago
-2x + y = 5 <br><br> what does y equal and how did you solve it?
Olin [163]

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Step-by-step explanation:

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snow_lady [41]
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