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VladimirAG [237]
3 years ago
6

What is the complete factorization of the polynomial below? x3 + x2 + 9x+9

Mathematics
1 answer:
PIT_PIT [208]3 years ago
3 0

Answer:

(x+1)(x-3i) (x+3i)

Step-by-step explanation:

x^3 + x^2 + 9x+9

We will use factor by grouping

Factor out x^2 from the first group and 9 from the second group

x^3 + x^2      + 9x+9

x^2( x+1)     + 9(x+1)

Factor out (x+1)

(x+1) ((x^2+9)

Now factor x^2+9

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

Replacing this

(x+1)(x-3i) (x+3i)

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How do I solve fo A when A/2m=9+H
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Answer:

Step-by-step explanation:

Simply multiply 2m both sides:

A = (9+H)(2m)

Hope this helps!

4 0
3 years ago
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Under her cell phone plan, Autumn pays a flat cost of $48 per month and $5 per gigabyte. She wants to keep her bill at $68.50 pe
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Answer:

4 gigabytes

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2 years ago
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On a journey of 600 km, a train was delayed 1 hour and 30 min after having covered 1/4 of the way. To arrive on time at the dest
Sati [7]

Answer:

10 hours

Step-by-step explanation:

(150/x) + 1.5 + (450/(x+15)) = 600/x

Multiply through by x(x + 15):

150(x + 15) + 1.5x(x + 15) + 450x = 600(x + 15)

150x + 2250 + 1.5x^2 + 22.5x + 450x = 600x + 9000

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1.5x^2 + 22.5x - 6750 = 0

x = (-22.5 +/- sqrt(22.5^2 - 4(1.5)(-6750))) / (2*1.5)

x = (-22.5 +/- sqrt(506.25 + 40500)) / 3

x = (-22.5 +/- sqrt(41006.25)) / 3

x = (-22.5 +/- 202.5) / 3

x = 180/3 or -225/3

x = 60 or -75

But a negative number doesn't make sense, so therefore x = 60, so the journey took 600/60 = 10  hours.

6 0
3 years ago
Answer this: 15 cookies to 40 brownies as a ratio in simplest form.
Nutka1998 [239]
Solutions

⇒15 Cookie to 40 brownies can be written as 15:40

⇒15:40 is the ratio we have to simplify

The GCF of 15 and 40 is 5 so we divide them by 5 

15 ÷ 5 = 3
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3 years ago
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Find the product 7 x 300 = hundreds
Evgesh-ka [11]
7 x 300 = 2,100 hope i helped and there are 21 hundreds in 2,100
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3 years ago
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