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nordsb [41]
3 years ago
15

Solve for the roots in the equation below. x4 + 3x2 - 4 = 0

Mathematics
1 answer:
kykrilka [37]3 years ago
5 0

Answer:  x = {1, -1, 2i, -2i}

<u>Step-by-step explanation:</u>

x⁴ + 3x² - 4 = 0

               ∧

             -1 +4 = 3   this works!

(x² - 1)(x² + 4) = 0

x² - 1 = 0     and      x² + 4 = 0

x² = 1          and      x² = -4

x = ±1         and       x = ± 2i

x = 1, -1      and       x = 2i, -2i

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1 foot is 12 inches

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3 0
4 years ago
Solve the equation to find the value of m and n.<br> 2m + 3n = -5<br> 5m + 3n = 1
Leokris [45]

Answer:

m = 2, n = - 3

Step-by-step explanation:

Given the 2 equations

2m + 3n = - 5 → (1)

5m + 3n = 1 → (2)

Subtract (2) from (1) term by term to eliminate n

2m - 5m = - 5 - 1

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Substitute m = 2 into either of the 2 equations and solve for n

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2(2) + 3n = - 5

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3 0
3 years ago
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Multiply it and you get the answer
3 0
4 years ago
How many vertices does the<br> pyramid have?
Westkost [7]

Answer:

5 vertices

Step-by-step explanation:

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6 0
2 years ago
The measure of an angle is 60° less than nineteen times the measure of its supplement. what is the measure of the angle?
DerKrebs [107]
Two angles are supplementary when they <span>add up to 180 degrees.

x = angle
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3 years ago
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