# Find the Bounds of the Zeros f(x)=x^3-3x^2-13x+15

Check the leading coefficient of the function. This number is the coefficient of the expression with the largest degree.
Largest Degree:
Create a list of the coefficients of the function except the leading coefficient of .
There will be two bound options, and , the smaller of which is the answer. To calculate the first bound option, find the absolute value of the largest coefficient from the list of coefficients. Then add .
Arrange the terms in ascending order.
The maximum value is the largest value in the arranged data set.
The absolute value is the distance between a number and zero. The distance between and is .
To calculate the second bound option, sum the absolute values of the coefficients from the list of coefficients. If the sum is greater than , use that number. If not, use .
Simplify each term.
The absolute value is the distance between a number and zero. The distance between and is .
The absolute value is the distance between a number and zero. The distance between and is .
The absolute value is the distance between a number and zero. The distance between and is .