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3 years ago

11

PLEASE HELP!!

1 answer:

Tresset [83]3 years ago

6 0

Answer:

C. {-2,-1,0,1}

Step-by-step explanation:

The x factor for all of them is the domain.

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Without actual division prove that x4 +2x3 -2x2 +2x -3 is exactly divisible by<br> x2 +2x-3

Brut [27]

Answer:

Step-by-step explanation:

$\displaystyle\Large\boldsymbol{} x^4+2x^3-2x^2+2x-3= \\\\\\x^4+2x^2(x-1)+2x-\underbrace{2-1}_{-3}= \\\\\\x^4-1+2x^2(x-1)+2x-2 = \\\\\\(x^2-1)(x^2+1)+2x^2(x-1)+2(x-1) = \\\\\\\underline{(x-1)}(x+1)(x^2+1)+2x^2\underline{(x-1)} +2\underline{(x-1)} =\\\\\\(x-1)((x+1)(x^2+1)+2x^2+2)=\\\\\\(x-1)(x^3+x^2+2x^2+x+2+1)=\\\\\\(x-1)(x^3+3x^2+x+3) =\\\\\\(x-1)( \underline{(x+3)}x^2+\underline{(x+3)})=(x^2+1)\underbrace{(x-1)(x+3)}_{x^2+2x-3}= \\\\\\(x^2+1)(x^2+2x-3) : (x^2+2x-3)=x^2+1$

7 0

3 years ago

Can somebody help me pls

enot [183]

Answer:

Step-by-step explanation:

58+q=180 (opposite angles of a cyclic quadrilateral are supplementary)

q=180-58=122°

similarly p+90=180

p=180-90=90°

6 0

4 years ago

Read 2 more answers

Can somebody help me please with both of these questions??

klio [65]

Answer:

The slope is -2

Step-by-step explanation:

m =

y2 - y1

x2 - x1

that's the formula

4 0

3 years ago

Help pls :( I’ll mark you brainlist no links<br> Links= report

yan [13]

Answer:

x = 112, y = 68, z = 112

Step-by-step explanation:

y = 68

x = z = 180 - 68 = 112

8 0

2 years ago

The population density of the world is calculated by finding the ratio of the total number of people in the world to the area of

Romashka [77]

Answer:

51

Step-by-step explanation:

A = Surface area of the Earth = $1.5\times 10^8\ \text{km}^2$

Total number of people on Earth = 7.594 billion as of 2018 = $7.594\times 10^9$

We need to find the number of people living in each square km of land area.

So, we need to divide the number of people by the land area of the Earth.

$1.5\times 10^8\ \text{km}^2=7.594\times 10^9\ \text{people}$

$\Rightarrow 1\ \text{km}^2=\dfrac{7.594\times 10^9}{1.5\times 10^8}$

$\Rightarrow 1\ \text{km}^2=50.63\approx 51\ \text{people}$

So, 51 people will inhabit each square km of land area.

5 0

3 years ago