f(5X-1)=-3X^2-2

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Solution for f(5X-1)=-3X^2-2 equation: 



f(5f-1)=-3f^2-2

We move all terms to the left:

f(5f-1)-(-3f^2-2)=0

We multiply parentheses

-(-3f^2-2)+5f^2-1f=0

We get rid of parentheses

3f^2+5f^2-1f+2=0

We add all the numbers together, and all the variables

8f^2-1f+2=0

a = 8; b = -1; c = +2;
Δ = b2-4ac
Δ = -12-4·8·2
Δ = -63
Delta is less than zero, so there is no solution for the equation

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