Property 2
\[ a\neq0 \qquad a,b,c\in\mathbb{R} \] \[ ax^2+bx+c=0 \qquad S.S.=\{x_1,x_2\} \]if the equation can not be divided to its multipliers then \(\Delta=b^2-4ac\)
\[ x_1=\samefrac{-b+\sqrt{\Delta}}{2a} \qquad x_2=\samefrac{-b-\sqrt{\Delta}}{2a} \]1.
\(x^2-6x+7=0\)
\(\Rightarrow S.S.=?\)
2.
\(x^2-4x-1=0\)
\(\Rightarrow S.S.=?\)
3.
\(x^2-8x+13=0\)
\(\Rightarrow S.S.=?\)
4.
\(x^2-6x+2=0\)
\(\Rightarrow S.S.=?\)
5.
\(x^2-2x-2=0\)
\(\Rightarrow S.S.=?\)
6.
\(x^2-8x+10=0\)
\(\Rightarrow S.S.=?\)
7.
\(x^2-5x+3=0\)
\(\Rightarrow S.S.=?\)