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Eva8 [605]
2 years ago
15

What is the coefficients of x² in (2-3x) (x²-5)​

Mathematics
2 answers:
aniked [119]2 years ago
5 0

Answer:

+2

Step-by-step explanation:

=> (2-3x)(x^2-5)

=> (2x^2-10-3x^3+15x)

<em>Arranging it in descending order</em>

=> -3x^2+2x^2+15x-10

<u><em>So, the coefficient of x² in this expression is +2</em></u>

SOVA2 [1]2 years ago
3 0

This depends if you are supposed to simplify the binomials first:

If you leave it in the form provided then the coefficient would be 1

However, you can multiply the binomials together in order to simplify the expression:

(2 - 3x)( {x}^{2}  - 5)

(2  \times  {x}^{2} ) + (2 \times  - 5) + ( - 3x \times  {x}^{2} ) + ( - 3x  \times  - 5)

{ - 3x}^{3}  +  {2x}^{2}  + 15x - 10

Which then shows the coefficient would be 2

So it all depends on the directions provided, I would assume the correct answer is 2 if the directions are the exact same as provided on Brainly.

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Use the grouping method to factor this polynomial x ^ 3 + 2x ^ 2 + 7x + 14
elena55 [62]

Answer:

B. (x^{2}+7)(x+2)

Step-by-step explanation:

The greates common factor between 7 and 14 is 7 so you know that one of the terms is going to be 7....but what times 7 equals 14...2

So we know that in one set of parentheses its going to be (something +2) and in another (something +7)

Well if we know that one is going to be 2, how do we go from 2 to 2x^{2}.....2 times x^{2} equals 2x^{2}

So now we know that one set of parentheses is going to be (something + 2) times (x^{2}+7)

So lastly, we have to find out how to get x^{3} but since we already have a x^{2} in the second set of parentheses all we have to do is put a x in the first set because x times x^{2} = x^{3}

Hope this helps!

6 0
3 years ago
Need help on this one please
lesya [120]

Answer: y = -2x - 4

Step-by-step explanation:

This question asks that you give your answer in slope-intercept form, which is written as y = mx + b, where m is the slope, and b is the y-intercept.


In order to write an equation for this line in slope-intercept form, you need to find the slope and the y-intercept. You can find the slope by selecting any two clear points on the graph and finding the [change in y] ÷ [change in x].

For example, I’ll use (-3, 2) and (-2, 0):

Change in y: 2 - 0 = 2

Change in x: -3 - (-2) = -1

Change in y ÷ Change in x = 2 ÷ (-1) = -2


So, the slope, m, is -2. Finding b, or the y-intercept is a lot more straightforward; you just find where the line intercepts the y-axis, or when x = 0. Looking at the graph, we can see that the y-intercept is -4, so b = -4.


Now, we can put these together in an equation.

y = mx + b, where m = -2 and b = -4


y = -2x -4

3 0
1 year ago
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zhenek [66]

Answer:(6,9)

Step-by-step explanation:

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2 years ago
Expand 8x - 2x + 3(-4x+9)
stiks02 [169]

Answer:

4

Step-by-step explanation:

Always do parentheses first!

-4x+9=-5x

8x-2x=6x

-5x-6x+3=

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3 0
3 years ago
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DerKrebs [107]

Answer:

24

Step-by-step explanation:

6*8=24

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