Question

if f(x)=3x^2-5x+7 show that f(-1)=3f(1)​

Answer 1

Step-by-step explanation:

First putting x =-1,

f(-1)=3×(-1)^2-5×(-1)+7=15

Similarly, putting x=1

f(1)=3×1^2-5×1+7=5

thus, 3f(1)=3×f(1)=3×5=15

hence proved

Answer 2

Hey there,

Pl check the attached answer

Hope it help