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vova2212 [387]
3 years ago
11

2 (x+8)

Mathematics
1 answer:
antoniya [11.8K]3 years ago
5 0

Answer:

Step-by-step explanation: its 1.87

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X²(x-3x) is a polynomial of which degree?​
zloy xaker [14]

Answer:

3

Step-by-step explanation:

We simply start by opening up the bracket

we have this as:

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

The degree is simply the highest power of x

This is 3

3 0
3 years ago
Let V be the vector space P3[x] of polynomials in x with degree less than 3 and W be the subspace
Pepsi [2]

By definition, the span of two vectors is the set of all possible linear combinations of said vectors. So, any element in W is obtaining by choosing two numbers a,b and building

a(7-8x-8x^2)+b(x^2-(5+6x)) = -8ax^2-8ax+7a+bx^2-6bx-5b

(a)

So, you can show a nonzero polynomial in W by choosing any values of a and b, as long as they're not both zero. To keep it as simple as possible, we can choose for example a=1, b=0 and we obtain one of the base vectors of W:

7-8x-8x^2

(b)

Factoring the powers of x, we see that a generic polynomial in W looks like

(b-8a)x^2-(8a+6b)x+7a-5b

So, we must build a polynomial

dx^2+ex+f

such that it is not possible that

\begin{cases}d=b-8a\\e=8a+6b\\f=7a-5b\end{cases}

For example, let's try the polynomial x^2+x+1

We should solve the system

\begin{cases}b-8a=1\\8a+6b=1\\7a-5b=1\end{cases}

And you can check that it has no solutions. So, the polynomial x^2+x+1 does not belong to W. On the other hand, it surely belongs to V, because it is a polynomial with degree less than 3. So, the polynomial x^2+x+1 belongs to V/W.

7 0
3 years ago
I need help with geometry
Ede4ka [16]

Answer:

corresponding angles

the angles are equal

equation: 9x+8 = 4x+18

x=2

angle measurements: 26⁰

Step-by-step explanation:

solve your equation

9x+8 = 4x+18

subtract 4x from each side

5x + 8 = 18

subtract 8 from each side

5x = 10

divide by 5

x = 2

insert x=2 into original equations to make sure you get the same answer.

9(2) + 8 = 26

4(2) + 18 = 26

8 0
3 years ago
At the movie theater Leon can buy 4 large popcorns or 2 large popcorns and 3 candy bars for the same price. If the candy bars co
AlexFokin [52]
4p = 2p + 3c....p = popcorn, c = candy bars
c = 6

4p = 2p + 3(6)
4p = 2p + 18
4p - 2p = 18
2p = 18
p = 18/2
p = 9......whoa....9 bucks for popcorn....nothing is cheap anymore
5 0
3 years ago
Factorize <br> 4a^2-24a^2b^2+9b^2​
umka21 [38]
Hope I can help you

4 0
3 years ago
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