Question

if f(x)=x^2 - 4x +6, find f(1) - f(-1)

Answer 1

f(1)=1×2-4×1+6=4(put 1 where x in given eqn)
f(-1)=(-1)×(-1)×2-4×(-1)+6=1×2+4+6=12
f(1)-f(-1)=4-12=-8 ans.

Answer 2

The value of f(1) - f(-1) is -8.

Step-by-step explanation:

The given function is

$f(x)=x^2-4x+6$

We need to find the value of f(1) - f(-1).

Substitute x=1 in the given function .

$f(1)=(1)^2-4(1)+6=3$

Substitute x=-1 in the given function .

$f(-1)=(-1)^2-4(-1)+6=11$

The of f(1) - f(-1) is

$f(1)-f(-1)=3-11=-8$

Therefore, the value of f(1) - f(-1) is -8.

#Learn more

If f(x) = x^3+4x^2-5x+6,find the values of f(-1) and f(2).

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