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Furkat [3]
3 years ago
12

X^4 - x^2 - 2x -1 . solve

Mathematics
1 answer:
Alchen [17]3 years ago
5 0

Answer:

X⁴–X²–2X –1=0

(X²+X+1)(X²–X–1)=0

x = -   \frac{1 -  i\sqrt{3} }{2}  \\ x =   - \frac{ 1 + i \sqrt{3} }{2}

x =  \frac{1 +  \sqrt{5} }{2}  \\ x =  \frac{1 -  \sqrt{5} }{2}

I hope I helped you^_^

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3.152 repeating into a improper fraction
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3  19/125

You can take any number, such as 3.152, and write a 1 as the denominator to make it a fraction and keep the same value, like this:

3.152 / 1

To get rid of the decimal point in the numerator, we count the numbers after the decimal in 3.152, and multiply the numerator and denominator by 10 if it is 1 number, 100 if it is 2 numbers, 1000 if it is 3 numbers, and so on.

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Line AB is a directed segment with endpoints A(2,2) and B(14,14). In two or more complete sentences, explain how you would verif
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It is not recommended that points be marked with X, let's marked with C(6,6)=(Xc,Yc)

The coordinates of the point C(Xc,Yc) which belongs to the line AB and divides line AB in a ratio m : n = 1 : 2 or m/n=1/2 are get it with following formula

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When we replace given coordinates we get

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Yc=(2+(1/2)*14) / (1+(1/2)) = (2+7) / (3/2) = 9/(3/2) = (9*2)/3 = 3*2 =6 => Yc=6

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Good luck!!!



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