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rewona [7]
3 years ago
11

Factor the expression 2x^3-3x^2-5x

Mathematics
1 answer:
Ivan3 years ago
6 0

Answer:

x(2x-5)(x+1)

Step-by-step explanation:

1. First factor out the x of all the numbers to get x( 2x^2 -3x -5)

2. To factor, I used cross multiplying- (Sorry but I don't know how to explain it)

3. You're done!

(Sorry if it isn't amazing)

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A circle is centered at the point (5,-4) And passes through the point (-3,2). What is the equation of the circle?
Natalka [10]
The equation of a circle is:

(x-h)2 + (y-k)2 = r2

where (h,k) is the location of the center and r is the radius. So we need to find h, k, and r. The center is given as (5,-4) so h = 5 and k = -4:

(x-5)2 + (y-(-4))2 = r2
(x-5)2 + (y+4)2 = r2

So we need to find r. Use the distance formula to find the distance between (5,-4) and (-3,2):

r = [(5-(-3))2+((-4)-2)2]1/2
r = [82 + (-6)2]1/2
r = [64 + 36]1/2
r = 1001/2

r= 10

The final equation is:

(x-5)2 + (y+4)2 = 102
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3 years ago
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Step-by-step explanation:

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Part A: Explain why the x-coordinates of the points where the graphs of the equations y = 4x and y = 2x−2 intersect are the solu
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The place where two equations intersect, has a certain value of y. This means that in the intersection point, the y-values of both expressions are the same, so y = y. Since y is also represented by the following equations, y = 4x and y = 2x - 2, the x-value of the intersection point is 4x = 2x - 2.
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Answer:

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