f(2)=(-3*2)-1

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Solution for f(2)=(-3*2)-1 equation: 



f(2)=(-3*2)-1

We move all terms to the left:

f(2)-((-3*2)-1)=0

We add all the numbers together, and all the variables

f2-((-6)-1)=0

We add all the numbers together, and all the variables

f^2+7=0

a = 1; b = 0; c = +7;
Δ = b2-4ac
Δ = 02-4·1·7
Δ = -28
Delta is less than zero, so there is no solution for the equation

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