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Svet_ta [14]
3 years ago
13

Solve for c. a (c + b) = d

Mathematics
1 answer:
kiruha [24]3 years ago
8 0

Answer:

c=(d-ab)/a

Step-by-step explanation:

ac+ab=d

or,ac=d-ab

c=(d-ab)/a

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If a polynomial function f(x) has roots -8, 1, and 6i, what must also be a root of f(x)?
Naddik [55]

Answer:

it must also have the root : - 6i

Step-by-step explanation:

If a polynomial is expressed with real coefficients (which must be the case if it is a function f(x) in the Real coordinate system), then if it has a complex root "a+bi", it must also have for root the conjugate of that complex root.

This is because in order to render a polynomial with Real coefficients, the binomial factor  (x - (a+bi)) originated using the complex root would be able to eliminate the imaginary unit, only when multiplied by the binomial factor generated by its conjugate: (x - (a-bi)). This is shown below:

(x-(a+bi))*(x-(a-bi))=\\(x-a-bi)*(x-a+bi)=\\([x-a]-bi)*([x-a]+bi)=\\(x-a)^2-(bi)^2=\\(x-a)^2-b^2(-1)=\\(x-a)^2+b^2

where the imaginary unit has disappeared, making the expression real.

So in our case, a+bi is -6i (real part a=0, and imaginary part b=-6)

Then, the conjugate of this root would be: +6i, giving us the other complex root that also may be present in the real polynomial we are dealing with.

5 0
3 years ago
Is 23 prime or composite ?
dalvyx [7]
It is prime, it has no factors besides 1,23
3 0
3 years ago
Read 2 more answers
6th grade math help me, please:)))
Lesechka [4]

Step-by-step explanation:

<em>Hi</em><em> </em><em>there</em><em>!</em><em>!</em><em>!</em><em> </em>

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<em>reason</em><em> </em><em>look</em><em> </em><em>in</em><em> </em><em>picture</em><em>.</em><em> </em>

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<em>Hope</em><em> </em><em>it helps</em><em>.</em><em>.</em><em>.</em>

5 0
4 years ago
Please tell me the right answer.
Komok [63]

Answer:

b

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Help fast and thankssss god bless
Wewaii [24]

Answer:

1.

336-6=330

330÷6=55

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242-11=231

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18-3=15

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Each candy bar was 1.8 dollars

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14-9=5

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4+20+60=84

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7.

12-7=5

5×2=10

She had 10 in the begining

4 0
3 years ago
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