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2 years ago

If 2x+4 = (x²)²÷2 then what is x?

Mathematics

1 answer:

Leviafan [203]2 years ago

8 0

Answer:

Below.

Step-by-step explanation:

2x+4 = (x²)²÷2

2x + 4 = x^4/2

x^4 = 4x + 8

x^4 - 4x - 8 = 0

We can try trial an error to solve this

Looks like x = 2 fits it:

2^4 - 4(2) - 8

= 16 -8 -8 = 0

so x = 2 is one solution.

I can't find any other solution among other integers.

To find the other solutions you can draw a graph manually or by using software.

There will be either 1 or 3 more real solutions.

I used software to draw the graph and found one other solution:

x = -1.296

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3 years ago

91. Jack can read 45 pages of his book in one and a

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Answer:

10 hours

Step-by-step explanation:

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3 years ago

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3 years ago

A Ferris wheel has a radius of 80 feet. Two particular cars are located such that the central angle between them is 165º. To the

Alex

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Step-by-step explanation:

arc length = circumfrance x fraction of a circle

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2 years ago

Solve the system of inequalities:<br> 6y≥42<br> 4y+12≤0

Hatshy [7]

Answer:

no solution

Step-by-step explanation:

6y≥42

Divide each side by 6

6y/6≥42/6

y≥7

Then solve the second one

4y+12≤0

Subtract 12 from each side

4y+12-12≤0-12

4y ≤-12

Divide each side by 4

4y/4 ≤-12/4

y ≤-3

There is no solution since there is no overlap

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3 years ago