f-17=f(f-5)

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Solution for f-17=f(f-5) equation: 



f-17=f(f-5)

We move all terms to the left:

f-17-(f(f-5))=0



We calculate terms in parentheses: -(f(f-5)), so:

f(f-5)

We multiply parentheses

f^2-5f

Back to the equation:

-(f^2-5f)



We get rid of parentheses

-f^2+f+5f-17=0

We add all the numbers together, and all the variables

-1f^2+6f-17=0

a = -1; b = 6; c = -17;
Δ = b2-4ac
Δ = 62-4·(-1)·(-17)
Δ = -32
Delta is less than zero, so there is no solution for the equation

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