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a_sh-v [17]
3 years ago
7

How to solve x^4-33x^2+200=0

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
6 0
X^4-33x^2+200=0        (factor that out)
<span>x^4-33x^2+200 -----> (x^2-8)(x^2-25)
</span>
new equation:
x^2-8=0     x^2-25=0            (solve for x for both equations)
   x^2=8         x^2 =25      

the x's are still squared so you have the square root both sides of the equations to get rid of the ^2:

x^2=8        x^2=25
\sqrt{ x^{2} } = \sqrt{8}    \sqrt{x ^{2} } = \sqrt{25}

x=2 \sqrt{2}   x=5

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Describe how to transform the graph of g(x)= ln x into the graph of f(x)= ln (3-x) -2.
Strike441 [17]

Answer:

The graph of g(x) = ㏑x translated 3 units to the right and then reflected

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Step-by-step explanation:

* Lets talk about the transformation

- If the function f(x) reflected across the x-axis, then the new

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- If the function f(x) reflected across the y-axis, then the new

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- If the function f(x) translated horizontally to the right  

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- If the function f(x) translated horizontally to the left  

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- If the function f(x) translated vertically up  

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- If the function f(x) translated vertically down  

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* lets solve the problem

∵ Graph of g(x) = ㏑x is transformed into graph of f(x) = ㏑(3 - x) - 2

- ㏑x becomes ㏑(3 - x)

∵ ㏑(3 - x) = ㏑(-x + 3)

- Take (-) as a common factor

∴ ㏑(-x + 3) = ㏑[-(x - 3)]

∵ x changed to x - 3

∴ The function g(x) translated 3 units to the right

∵ There is (-) out the bracket (x - 3) that means we change the sign

  of x then we will reflect the function about the y-axis

∴ g(x) translated 3 units to the right and then reflected about the

   y-axis

∵ g(x) changed to f(x) = ㏑(3 - x) - 2

∵ We subtract 2 from g(x) after horizontal translation and reflection

  about y-axis

∴ We translate g(x) 2 units down

∴ g(x) translated 3 units to the right and then reflected about the

   y-axis and then translated 2 units down

* The graph of g(x) = ㏑x translated 3 units to the right and then

  reflected about the y-axis and then translated 2 units down to

  form the graph of f(x) = ㏑(3 - x) - 2

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