3 years ago

Can someone give me the answers?

Mathematics

2 answers:

balu736 [363]3 years ago

8 0

What the guy said at the bottom is the best choice

aniked [119]3 years ago

6 0

Answer:

Step-by-step explanation:

3 1

9 3

15 5

21 7

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If (a^3+27)=(a+3)(a^2+ma+9) then m equals

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m = - 3

Step-by-step explanation:

a³ + 27 ← is a sum of cubes and factors in general as

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a³ + 27

= a³ + 3³

= (a + 3)(a² - 3a + 9)

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Step-by-step explanation:

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Please help asap solve x^4+5x^2+4=0

const2013 [10]

Answer:

$x=\pm i\text{ or }x=\pm2i$

Step-by-step explanation:

So we have the equation:

$x^4+5x^2+4=0$

Let's let u be equal to x². So:

$u^2+5u+4=0$

Factor:

$(u+1)(u+4)=0$

Zero Product Property:

$u+1=0\text{ or } u+4=0$

Subtract:

$u=-1\text{ or }u=-4$

Replace:

$x^2=-1\text{ or }x^2=-4$

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3 years ago