Solved example of quadratic formula
Find the roots of the equation using the Quadratic Formula
Factor the trinomial $x^2+6x+8$ finding two numbers that multiply to form $8$ and added form $6$
Thus
Break the equation in $2$ factors and set each equal to zero, to obtain
Solve the equation ($1$)
We need to isolate the dependent variable , we can do that by simultaneously subtracting $2$ from both sides of the equation
Canceling terms on both sides
$x+0=x$, where $x$ is any expression
Canceling terms on both sides
Solve the equation ($2$)
We need to isolate the dependent variable , we can do that by simultaneously subtracting $4$ from both sides of the equation
Canceling terms on both sides
$x+0=x$, where $x$ is any expression
Canceling terms on both sides
Combining all solutions, the $2$ solutions of the equation are
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