4 years ago

Which expressions are equivalent to the one below? CHECK ALL THAT APPLY

Mathematics

1 answer:

muminat4 years ago

5 0

The answers are A C D

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The roots of x 2 - 2x - 2 = 0 are 1±√3 1±√12 no real roots

sertanlavr [38]

Answer:

1±√5

Step-by-step explanation:

$\bf x^2-2x-2=0\Rightarrow x=\displaystyle\frac{-(-2)\pm\sqrt{(-2)^2-4*2*(-2)}}{2}\Rightarrow\\\\\Rightarrow x=\displaystyle\frac{2\pm\sqrt{4+16}}{2}=\displaystyle\frac{2\pm\sqrt{20}}{2}=\displaystyle\frac{2\pm2\sqrt{5}}{2}\Rightarrow\\\\\Rightarrow \boxed{x=1\pm\sqrt{5}}$

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3 years ago

Please help me I don’t get this !

ArbitrLikvidat [17]

Answer: Independent

Step-by-step explanation: I think this is probability..I assume it's probability right?

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3 years ago

1. Solve 3x^2+7=31 using square roots.

kiruha [24]

Answer:

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3 years ago

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FrozenT [24]

See you Need to round it so it is c=-4

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3 years ago

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vekshin1

Since the object is a cube, times 42 three times by itself. You have to do this because it is length x width x height. 42 x 42 x 42. The answer you're looking for is 74,088 cubic inches because it is three-dimensional.

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3 years ago

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