The maximum number of turning points in a cubic function is 2.
In this case,

The discriminant is

, which means the derivative has no real roots. This means there are no critical points and thus no turning points/relative extrema.
18x^5-3x^4+x^3-x^2-72x^3+12x^2-4x+4, and then you will combine like terms to be :
18x^5-3x^4-71x^3+11x^2-4x+4
Answer: -4.775
Step-by-step explanation: 11(7/8) + 3(1/5) - (-4.775) = 15
150/15=10
because 10 times 15 equals 150
3 digit dividend = 150
divisor between 10 and 20 is 15
We have point

, so first calculate

. There will be:

Now, we can write the equation of the normal line as:

Normal line (and every line) crosses x-axis when y = 0, so coordinates of A: