Equation From Roots Solution4





In this page equation from roots solution4 we are going to see solution for the worksheet framing quadratic equation from roots.

Find the zeroes of the following quadratic polynomials and verify the basic relationship between the zeroes and coefficients

First we have to compare the given equation with the general form of a x² + b x + c

Let p(x) = 2 x² – 2 2 x + 1

So, p(x) = 0

2 x² – 2 2 x + 1 = 0

(2 x - 1) (2x - 1) = 0

2 x – 1 = 0    

2 x = 1

x = 1/2

2 x – 1 = 0    

2 x = 1

x = 1/2

p (1/2) =(2 (1/2) - 1) (2(1/2) - 1)

              = (1-1) (1-1)

              = 0        

p (1/2) =(2 (1/2) - 1) (2(1/2) - 1)

              = (1-1) (1-1)

              = 0

Hence the zeroes of p(x) are 1/2 and 1/2

Thus, Sum of zeroes = 2 and the product of zeroes = 1/2

From the basic relationships, we get

The sum of the zeroes = -coefficient of x/coefficient of x²

                                                                  = -(-22)/2

                                          = 2   

The product of the zeroes = constant term/coefficient of x²

                                                                         = 1/2

Thus the basic relationship verified.


First we have to compare the given equation with the general form of a x² + b x + c

x² + 2 x - 143

So, p(x) = 0

x² + 2 x – 143  = 0

(x - 11) (x + 13) = 0

 x – 11 = 0    

 x = 11

x + 13 = 0    

 x = -13

p (11) = (11 - 11) (11 + 13)

              = (0) (24)

              = 0        

p (-13) = (-13 - 11) (-13 + 13)

              = (-24) (0)

              = 0

Hence the zeroes of p(x) are 11 and -13

Thus, Sum of zeroes = -2 and the product of zeroes = -143

From the basic relationships, we get

The sum of the zeroes = -coefficient of x/coefficient of x²

                               = -2/1

                               = -2   

The product of the zeroes = constant term/coefficient of x²

                                    = -143/1

                                     = -143

Thus the basic relationship verified. 

equation from roots solution4 equation from roots solution4