f(2.5)=2(2.5)^2-3(2.5)+7

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Solution for f(2.5)=2(2.5)^2-3(2.5)+7 equation: 



f(2.5)=2(2.5)^2-3(2.5)+7

We move all terms to the left:

f(2.5)-(2(2.5)^2-3(2.5)+7)=0

We add all the numbers together, and all the variables

f(2.5)-12=0

We multiply parentheses

2.5f-12=0

We move all terms containing f to the left, all other terms to the right

2.5f=12

f=12/2.5

f=4+1/1.25

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