2 years ago

Please help! 10 POINTS! Please solve 2x^2+10+8=0

Mathematics

1 answer:

Lelu [443]2 years ago

3 0

Answer:

x must be a negative i mean it has to how tfk do you get zero at an answer what kn the world

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The table below shows the relationship between m and p, where the independent variable is p.

scoray [572]

Answer:

Step-by-step explanation:

P is an independent variable, therefore making M a dependent variable.

B and D are not it.

When plugging in P in choice A, M has a different answer than in the list.

A is not it.

When pluggin in P in choice C, M has the same answers as in the list.

C is the answer

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2 years ago

WILL GIVE BRAINLIEST IF I CAN AND 40 PTS<br> PLEASE I NEED REAL HELP

Alinara [238K]

Answer:

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3 years ago

Solve using demoivres theorem

pashok25 [27]

It's difficult to make out, but I think the task is to expand

$(\sqrt3-i)^4$

Write the number in polar form first:

$\sqrt3-i=2e^{-i\pi/6}$

By DeMoivre's theorem, you have

$(\sqrt3-i)^4=\left(2e^{-i\pi/6}\right)^4=2^4e^{-i4\pi/6}=16e^{-i2\pi/3}$

and converting back to Cartesian form, this number is equivalent to

$16\left(\cos\dfrac{2\pi}3-i\sin\dfrac{2\pi}3\right)=16\left(-\dfrac12+-\dfrac{\sqrt3}2\right)=-8(1+i\sqrt3)$