f(x)=2x-x²
x=(x+1)
math
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Answer: -x²+1
Step-by-step explanation: x= (x+1)
f(x) = 2x-x²
Substitute the value of 'x' in f(x)
f(x+1)= 2(x+1)-(x+1)²
(x+1)²= x²+2x+1
2(x+1)-(x+1)²= (2x+2)- (x²+2x+1)
= 2x+2-x²-2x-1
f(x+1)= -x²+1
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