Based on the given problem of -7x⁴ = 36, the solution to the equation is x = -1.5.
<h3>What is the solution to this problem?</h3>
The equation to find x is given as:
-7x⁴ = 36
Solving it gives:
-7x⁴ = 36
x⁴ = 36/-7
x⁴ = -36/7
x = ⁴√(-36/7)
x = -1.5
In conclusion, x is -1.5.
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Rewrite the equation as
If we choose , the right hand side becomes zero, and so does the left hand side.
If you graph the two functions and , you'll see that there are only two solutions, so the ones we found are the only ones.
If your friend was working from your figures, then his estimate was
waaaay off, like in outer space.
If you paid $2.40 for 3434 pounds, then that works out to something
like 0.007¢ for each pound. His estimate of $1.80 is more than 2,500
times as much as you paid for each pound.
Even allowing some slack for the quantity discount that you surely
must have been awarded for buying 1.7 tons of them all at once, still
that doesn't support his wild estimate in any way.
He'd be better off buying a few pounds from you, at, say, 50¢ a pound.
He needzum, you gottum, he'll gettum, and you'll never missum. That way,
you'll both make a killing, and it's a win-win-win all around.