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aleksandrvk [35]
3 years ago
9

Compute $(1 + i)(2 + i)(3 + i).$

Mathematics
1 answer:
ahrayia [7]3 years ago
8 0

Answer:

10i

Step-by-step explanation:

Step 1: Expand first 2

(1 + i)(2 + i)

2 + i + 2i + i²

2 + 3i + (-1)

1 + 3i

Step 2: Expand again

(1 + 3i)(3 + i)

3 + i + 9i + 3i²

3 + 10i + 3(-1)

3 + 10i - 3

10i

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Answer:

<h2>128m³</h2>

Step-by-step explanation:

Volume = L x W x H

L = 4

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8 0
3 years ago
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The sum of the ages of Kristen and Ben is 32. Four years ago Kristen was twice as old as Ben. How old are they both now?
Elan Coil [88]

Let us say that:

K = age of Kristen

B = age of Ben

 

From the problem, we make the equations:

eqtn 1: K + B = 32

eqtn 2: (K – 4) = 2 (B – 4)

 

Simplifying eqtn 2:

K – 4 = 2 B – 8

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Plugging in this to eqtn 2:

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From eqtn 2:

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3 years ago
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vesna_86 [32]

Answer:

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Step-by-step explanation:

What you have to do first is to get rid of the 3 in the x^2 so you will divide 3 by the whole thing to get x^2-4x=3.

You will then divide -4 by 2 and then square the answer to get 4.

You will then add the 4 into the end of the equation and to the 3 to get x^2-4x+4=7.

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Answer:

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