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vitfil [10]
3 years ago
10

Does anyone know the answer to this?

Mathematics
2 answers:
aalyn [17]3 years ago
8 0

First you need to distribute : -4x + 8x - 3

Combine like terms : 4x -3


STALIN [3.7K]3 years ago
5 0

8.  Im assuming you want to:-

Simplify  -2x(2 - 4x ) - 3

Distributing the -2x over the parentheses:-

= -4x + 8x^2 - 3

= 8x^2 - 4x - 3

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What does the fundamental theorem of algebra illustrate?
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The fundamental theorem of algebra guarantees that a polynomial equation has the same number of complex roots as its degree.

Step-by-step explanation:

The fundamental theorem of algebra guarantees that a polynomial equation has the same number of complex roots as its degree.

We have to find the roots of this given equation.

If a quadratic equation is of the form ax^{2}+bx +c=0

Its roots are \frac{-b+\sqrt{b^{2}-4ac } }{2a} and \frac{-b-\sqrt{b^{2}-4ac } }{2a}

Here the given equation is 2x^{2}-4x-1 = 0

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If the roots are x_{1} and x_{2}, then

x_{1} = \frac{-2+\sqrt{(-4)^{2}-4\times 2\times (-1)}}{2\times 2}

                       = \frac{4 +\sqrt{24}}{4}

                       = \frac{2+\sqrt{6} }{2}

x_{2} = \frac{-2-\sqrt{(-4)^{2}-4\times 2\times (-1)}}{2\times 2}

                        = \frac{4 +\sqrt{8}}{4}

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Answer:

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23bacteria:1hr

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