Question

if f(x) = x^2 -5x +7 , evaluate f(2) -f (-1) + (1/3).

Answer 1

Heya !!!

F(X) = X² - 5X +7

F(2) = (2)² - 5 × 2 +7

=> 4 - 10 +7

=> 11 -10 = 1

F(-1) = (-1)² - 5 × -1 + 7

=> 1 + 5 + 7

=> 6 +7

=> 13


F(X) = 0


F(1/3) = 0

F(1/3) = (1/3)² - 5 × 1/3 + 7

=> 1 /9 - 5/3 + 7 = 0

=> 1 - 15 + 63/9 = 0


=> 64 - 15 = 0 × 9



=> 49



Therefore,

F(2) - F(-1) + F(1/3) => 1 - 13 + 49/9

=> 9 - 117 + 49

=> 58 -117/9

=> -59

HOPE IT WILL HELP YOU....... :-)

Answer 2

Hi,

Please see the attached file!

Thanks