Question

What is the solution set of x 2 + 5x + 1 = 0?

Answer 1

have you covered the quadratic formula yet?

Answer 2

not very familiar

Answer 3

have you covered quadratics yet?

Answer 4

yes

Answer 5

well.. the constant is "1" and is a prime thus no factorable per se

so you'd need to use the quadratic formula I'd think to get the "x" values \(\bf \textit{quadratic formula}\\
{\color{blue}{ 1}}x^2{\color{red}{ +5}}x{\color{green}{ +1}}=0
\qquad \qquad
x= \cfrac{ - {\color{red}{ b}} \pm \sqrt { {\color{red}{ b}}^2 -4{\color{blue}{ a}}{\color{green}{ c}}}}{2{\color{blue}{ a}}}\)