Question

if f[x]=xsquare-5x+7, evaluate f [2]- f [-1 ]+ f [ 1/3]

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

f(2)=1, f(-1) =13, f(1/3)=85/18

Step-by-step explanation:

f(2)=(2)^2- 5(2)+7

    =4-10+7

     =-6+7

     =1

f(-1)=(-1)^2 -5(-1)+7

    =1+5+7

   =13

f(1/3)=2(1/3)^2-5(1/2+7

       =2(1/9)-5/2+7

        =L.C.M of 2,9=18

        =2/9*2/2 -5/9*9/9+7/1*18/18

         =4/18-45/18+126/18

         =-41/18+126/18

         =85/18