Question

Given f(x) =2x-x^2. find f(2) +f(1)​

Answer 1

f(x) = 2x- x²

= -x²+2x

if we put x=1

f(1) = -(1)²+2*1

= -1+2

=1

if we put x=2

f(2)= -(2)²+2*2

=0

f(1)+f(2)= 1+0

=1

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Answer 2

Answer:

f ( 2 ) + f ( 1 ) = 1

Step-by-step explanation:

f ( x ) = 2 x - x ^2 → f ( 2 ) + f ( 1 )

f ( 2 ) = 2 ( 2 ) - 2 ^ 2

f ( 2 ) = 4 - 4

f ( 2 ) = 0

f ( 1 ) = 2 ( 1 ) - 1 ^ 2

= 2 - 1

f ( 1 ) = 1

→ f ( 2 ) + f ( 1 )

0 + 1

f ( 2 ) + f ( 1 ) = 1