# Algebra

posted by .

What are the sum of the roots of f(x) = x^2 - 16x + 63?

• Algebra -

You need to factor first, find the roots then add them

(x-7)(x-9) = 0

find the roots by setting each factor = 0 and solving for x. Then add them together.

## Similar Questions

1. ### algebra

Solve the system by addition or substitution. 16x-4y=20 y=4x-4 I ask for help with this and forgot to add the problem. can anyone help me understand how to do this?
2. ### Algebra

There are two solutions to | 16x - 5 | = 3. The greatest solution is ___. Since the expression, 16x - 5, can be either positive or negative, solve for both. 16x - 5 = 3 16x = 8 x = .5 -(16x - 5) = 3 -16x + 5 = 3 -16x = -2 x = 1/8 You …
3. ### Algebra

Given the roots, 1/2 and 4, find: (A) The quadratic equation 2x^2-9x+4 ?
4. ### algebra

x^2 +16x+64 x^2+16x=64 (x=3)^2=16x-64 16x=-64 x=-4 Check this problem please
5. ### algebra

x^4+16x^2+7x-11=0 Descartesâ€™ rule of signs to find the nature of the roots of the equation
6. ### algeBRA!!!

What is the sum of the rational roots of f(x)=x^3−4x^2+16x−39?
7. ### Algebra 1

Find the roots of each quadratic polynomial. 1. 16x + 40 + 2x^2 Solve. Round to the nearest hundredth. 2. 12 = 5x^2
8. ### Algebra 2/Trigonometry

How do I solve f(x)=x^3-6x^2+16x-96 using Descartes' Rule of Signs to find the number of positive and negative real roots, along with imaginary roots, but not with a graph?
9. ### Algebra

Solve the following equation. 16x-8square roots of x = 35
10. ### Mathematics(indices)

Square roots ofxy^2* 4th roots of 16x^4/x^3y^2

More Similar Questions