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4 years ago

10

(7, -3) and (9, -5) find the slope

1 answer:

anzhelika [568]4 years ago

8 0

The slope is -2. You find this by putting the rise between the two points over the run.

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4 years ago

Find the complex zeros of x^3+27. write f in factored form

aliina [53]

$x^3+27=0
\\x^3+3^3=0
\\(x+3)(x^2-3x+9)=0
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\\
\\x_{1,2}= \frac{-b\pm \sqrt{b^2-4ac} }{2a} = \frac{-(-3)\pm \sqrt{(-3)^2-4\times1\times9} }{2\times1} =\frac{3\pm \sqrt{-27} }{2} =\frac{3\pm 3\sqrt{3}i }{2} 
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$

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3 years ago