Solving Quardratic Equation x^3 + 5x^2 -16x - 80 = 0
1 answer:
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<h2>Hello!</h2>
The answer is: [-2,2]
<h2>Why?</h2>The range of a function shows where the function can exist in the y-axis.
To know the range of the function, we have to isolate x,
So
The only possible values that y can take go from -2 to 2. Taking values out of these values will give as result a non-real number.
Therefore,
The range of the function is [-2,2]
Have a nice day!
The solution is completely correct, as putting 5 or 0 in the formula again will make it true.
