Which of the following is a factor of f(x) = 3x3 + 8x2 − 87x + 28?
2 answers:
Answer with explanation:
The expression whose factor we have to find is
![f(x) = 3x^3 + 8x^2 - 87x + 28\\\\f(x)=3*[x^3+\frac{8x^2}{3}-29x+\frac{28}{3}]\\\\\text{By rational root test possible roots are}\\\\ \pm 1, \pm 2, \pm 4,\pm 7,\pm \frac{1}{3},\pm \frac{2}{3},\pm \frac{4}{3},\pm \frac{7}{3},\pm 28.](https://tex.z-dn.net/?f=f%28x%29%20%3D%203x%5E3%20%2B%208x%5E2%20-%2087x%20%2B%2028%5C%5C%5C%5Cf%28x%29%3D3%2A%5Bx%5E3%2B%5Cfrac%7B8x%5E2%7D%7B3%7D-29x%2B%5Cfrac%7B28%7D%7B3%7D%5D%5C%5C%5C%5C%5Ctext%7BBy%20rational%20root%20test%20possible%20roots%20are%7D%5C%5C%5C%5C%20%5Cpm%201%2C%20%5Cpm%202%2C%20%5Cpm%204%2C%5Cpm%207%2C%5Cpm%20%5Cfrac%7B1%7D%7B3%7D%2C%5Cpm%20%5Cfrac%7B2%7D%7B3%7D%2C%5Cpm%20%5Cfrac%7B4%7D%7B3%7D%2C%5Cpm%20%5Cfrac%7B7%7D%7B3%7D%2C%5Cpm%2028.)
First two options are rejected as the expression can,t have factor 
.
So, root of the expression is , x=4.
Option C: x-4
The answer should be (x-4)
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Hope this helped!
-TTL
Answer:
12) 26x^2+22x+25
13) -15x^2-21x-11
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Step-by-step explanation:
Answer:
8r and -4r
3s and -3s
second andd fourth answer
He has 4 $5 bills and 4 $1 bills
The base length is 27 cm.
area of a parallelogram is A=b*h
plug in the known area and height into the formula: 513=19*b
divide off the 19: b=27
