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solong [7]
3 years ago
8

Factor 6x^3 + 33^2 - 63x

Mathematics
1 answer:
Paladinen [302]3 years ago
5 0
This factors out to 3x (x + 7) (2x - 3)=0.

First, notice that the greatest common factor of this set is 3x.

Once you factor that out, you have a quadratic 2x^2+11x-21=0.

You can solve this by factoring using the ac method, to find two factors whose product is -42 and whose sum is 11. These factors are 14 and -3. 

You can split the middle term b to write 2x^2+14x-3x-21=0.

Then, you can factor to write 2x(x+7)-3(x+7)=0 \\ (2x-3)(x+7)=0. Finally, don't forget the 3x from earlier!

This factors out to 3x (x + 7) (2x - 3)=0.
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Answer:

  0

Step-by-step explanation:

The function is defined everywhere except at x=-6. The limit value is the function value at that point.

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3 years ago
What are the y-intercept of the function f(x)=-2x^2-3x+20?
Serhud [2]

Answer:

\sf A) \ (-4, \ 0) \ and \ \  [\dfrac{5}{2} , \ 0]

Explanation:

Given function: f(x) = -2x² - 3x + 20

To find the x-intercepts of a function, f(x) = 0

=================

-2x² - 3x + 20 = f(x)

-2x² - 3x + 20 = 0

-2x² - 8x + 5x + 20 = 0

-2x(x + 4) + 5(x + 4) = 0

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-2x + 5 = 0, x + 4 = 0

-2x = -5, x = -4

x = -5/-2,x = -4

x = 5/2, x= -4

Coordinates: (-4, 0), (5/2, 0)

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Answer:

19%

Step-by-step explanation:

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