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Paraphin [41]
2 years ago
10

Find a vector b if: It has the same direction as 2,-1and haslength of 3 units​

Mathematics
1 answer:
Gnom [1K]2 years ago
7 0

Answer:

I dunno just need the points sorry

Step-by-step explanation:

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Which is one of the solutions to the equation 2x^2 - x - 4 = 0
Alex73 [517]

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x_{1}=\frac{1+\sqrt{33} }{4}\\x_{2}=\frac{1-\sqrt{33} }{4}

Step-by-step explanation:

Using quadratic formula

x=\frac{-b+-\sqrt{b^{2}-4*a*c} }{2*a}

we will have two solutions.

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So, a=2   b=-1  c=-4, we have:

x_{1}=\frac{+1+\sqrt{-1^{2}-4*2*-4} }{2*2}\\\\x_{2}=\frac{+1-\sqrt{-1^{2}-4*2*-4} }{2*2}

Finally, we have two solutions:

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5 0
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