Question

Which quadratic expression is written in standard form? -X2 - 5x + 7 0 ) (x + 3)x (x + 4)2 x² + 2(x+3)

Answer 1

$\begin{gathered} -x^2\text{ - 5x + 7 } \\ is\text{ in standard form} \end{gathered}$

Because the general expression for a quadratic equation is

$ax^2\text{ + bx + c }$