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3 years ago

What is the simplified expression for-3cd-d(2c-4)-4d

Mathematics

1 answer:

Elden [556K]3 years ago

8 0

Answer: 0 -5cd.

Hope this helps :)

- Martiinez :)

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On a soccer team, 10 children have siblings and 6 do not have siblings. If the soccer club has 8 teams of

prohojiy [21]

Answer:

62.5%

Step-by-step explanation:

(10*8)/(16*8) = 0.625 = 62.5%

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3 years ago

I need help on this

Anastaziya [24]

Answer:

(500÷1.8)÷60

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3 years ago

3X{[(12-8)X2]+[11-9)X3]}

stiv31 [10]

3*(8+6)=3*14=42 is your answer

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3 years ago

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Iteru [2.4K]

Let me wright this down

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4 years ago

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Simplify -6i(8-6i)(-8-8i)

padilas [110]

Answer:

-96 + 672\,i

Step-by-step explanation:

This is a product of complex numbers, so we have in mind not only the general rules for multiplying binomials, but also the properties associated with the powers of the imaginary unit "i", in particular $i^2=-1$

We start by making the first product indicated which is that of a pure imaginary number (-6i) times the complex number (8-6i). We use distributive property and obtain the new complex number that results from this product:

$-6\,i\,(8-6\,i)= (-6\,i)\,* 8 \, -\,6\,i\,(-6\,i)=-48\,i+36\,i^2=-48\,i+36\,(-1)=-36-48\,i$

Now we make the second multiplication indicated (using distributive property as one does with the product of binomials), and combine like terms at the end:

$(-36-48\,i)\,(-8-8\.i)=(-36)\.(-8)+(-36)(-8\,i)+(-48\,i)\,(-8)+(-48\,i)(-8\,i)=\\=288+288\,i+384\,i+384\,i^2=288+288\,i+384\,i+384\,(-1)=\\=288-384+288\,i+384\,i=-96+672\,i$

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3 years ago