If the cubic power of x equals - 27, then the value of X is?

If the cubic power of x equals - 27, then the value of X is?

If the cubic power of. X equals - 27, then the value of X is - 3

Three quarters of x equals 27? Why is x = four quarters of 27

3 / 4 power of x = 27, so x = (3 / 4 power of x) 4 / 3 power = 4 / 3 power of 27

If f (x) = x square + ax + 2 is an interval function (negative infinity, 4), then the range of a is?

Is it a decreasing function?
F (x) opening upward
So on the left side of the axis of symmetry x = - A / 2 is a decreasing function
So the axis of symmetry is on the right side of the interval
So - A / 2 ≥ 4
a≤-8