Question

show that 3 and minus 1 by 2 are the roots of quadratic equation 2 x square - 5 x minus 3 equal to zero​

Answer 1

Answer:

p(x)=2x^2-5x-3=0 by 3,-1/2

Step-by-step explanation:

p(3)= 2(3)^2 -5(3)-3=0

       = 2(9)-15-3

         =18-15-3

           =18-18 (plus minus chancel)

              =0

  p(-1/2)=2(-1/2)^2-5(-1/2)-3

           =2(1/4)+5/2-3

           =1/2+5/2-3

         =5+1/2-3

           =6/2-3

              =3-3

             =0

yes it's equal to zero