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bagirrra123 [75]
3 years ago
9

X to 7 divided by x to the 9 please answer this :)​

Mathematics
2 answers:
Nitella [24]3 years ago
6 0

Answer:

\frac{1^ }{x^{2} }

Step-by-step explanation:

What you have to do is keep the x and then subtract 7 from 9 which would be x^{-2} and then to make it positive you have to "invert" and that's why x^{2} goes in the bottom, with 1 on top.

trapecia [35]3 years ago
3 0

Answer: 1/x^2 or x^-2

Step-by-step explanation:

dividing exponents is subtracting so 1/x^(9-7) or 1/x^2

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Factor the expression completely over the complex numbers.
nekit [7.7K]

Answer:

The factor form of given expression is (x-4)(x-2i)(x+2i).

Step-by-step explanation:

The given expression is

x^3-4x^2+4x-16

It can be written as

f(x)=x^3-4x^2+4x-16

According to the rational root theorem, all possible rational roots are in the form of

\frac{a_0}{a_n}

Where, a₀ is constant term and a_n is leading coefficient.

f(4)=4^3-4(4)^2+4(4)-16=0

Since the value of f(x) is 0 at x=4, therefore 4 is a root of the function and (x-4) is a factor of given expression.

Use synthetic method to find the remaining factors.

(x^3-4x^2+4x-16)=(x-4)(x^2+4)

(x^3-4x^2+4x-16)=(x-4)(x^2-(2i)^2)

(x^3-4x^2+4x-16)=(x-4)(x-2i)(x+2i)

Therefore the factor form of given expression is (x-4)(x-2i)(x+2i).

8 0
4 years ago
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Solve the linear system using substitution <br><br> y - 5 = x<br> 4x - y = 4
Agata [3.3K]

Step-by-step explanation:

X=y-5

Now,

4x-y=4

4(y-5)-y=4

4y-20-y=4

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Substituting the value of y

8-5=x

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3 years ago
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sweet [91]

Answer:2/8


Step-by-step explanation:

do top and bottom multiply

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Bas_tet [7]

Answer:

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Step-by-step explanation:

13+10.6= is 23.6

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3 years ago
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Ymorist [56]

Answer:

r = 6

Step-by-step explanation:

Given that p varies directly as r, then the equation relating them is

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k = \frac{p}{r} = \frac{4}{2} = 2

p = 2r ← equation of variation

When p = 12

12 = 2r ( divide both sides by 2 )

hence r = 6

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3 years ago
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