What Is The Sum, Product,Roots Of A X2+4x-21=0

What is the sum, product,roots of a x2+4x-21=0

 

Answer:

The sum the roots of a quadratic equation is -4 and the Product of the roots of  a quadratic equation is -21.

Step-by-step explanation:

Given: x2+4x-21=0

ASked: sum, product,roots  of the given equation

Formula:

Sum of the roots of a quadratic equation

x1+x2 = - b/a

Product of the roots of  a quadratic equation

x1 . x2 = c/a

Solution:

x2+4x-21=0

a = 1

b = 4

c = -21

Sum of the roots of a quadratic equation

x1+x2 = - b/a

-b/a = -4/1

      = -4

Product of the roots of  a quadratic equation

x1 . x2 = c/a

   c/a = -21/1

        = -21

Therefore, the sum the roots of a quadratic equation is -4 and the Product of the roots of  a quadratic equation is -21.