F(x)=x^2/2+6x+21

Solution for F(x)=x^2/2+6x+21 equation:

(F)=F^2/2+6F+21

We move all terms to the left:

(F)-(F^2/2+6F+21)=0


Domain of the equation: 2+6F+21)!=0

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

6F+21)!=-2

F∈R


We get rid of parentheses

-F^2/2+F-6F-21=0

We multiply all the terms by the denominator


-F^2+F*2-6F*2-21*2=0

We add all the numbers together, and all the variables

-1F^2+F*2-6F*2-42=0

Wy multiply elements

-1F^2+2F-12F-42=0

We add all the numbers together, and all the variables

-1F^2-10F-42=0

a = -1; b = -10; c = -42;
Δ = b2-4ac
Δ = -102-4·(-1)·(-42)
Δ = -68
Delta is less than zero, so there is no solution for the equation