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katrin2010 [14]
3 years ago
6

#10 need help please

Mathematics
1 answer:
kifflom [539]3 years ago
5 0
4.
[6/3]=2
2 to the second power is 4.

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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
Middle school level math!<br> easy easy!<br> please help!
Sloan [31]
The answer is 12x^2. you multiply -4 by -3
7 0
4 years ago
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I need this answer ASAP
Nuetrik [128]

Answer:

B and D

(The ratio of cats to birds is greater than the ratio of ferrets to birds; The ratio of ferrets to cats is less than the ratio of dogs to cats)

hope this helps :)

8 0
3 years ago
The missing angle of (3x-5)
iris [78.8K]

Answer: 22

Step-by-step explanation:

(7x+5) + (3x-5) + 90 = 180

10x + 90 =180

        -90   -90

10x          =90

_               _

10             10

x = 9  

3(9)-5

27-5

22

5 0
3 years ago
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Which is the wrong one? BIGGER OR SMALLER <br><br> help
harina [27]

Answer:

It's D. 1.2(line) < 3.1(pi) < 4.6(square root 22)

Step-by-step explanation:

Look in the comments to figure out why D is correct. You're welcome! :)

7 0
3 years ago
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