Question

Qual a solução da equação . * x elevado 2-3x+2=0 sendo U =R

Answer 1

$\large\boxed{\begin{array}{l}\sf x^2-3x+2=0\\\sf\Delta=b^2-4ac\\\sf\Delta=(-3)^2-4\cdot1\cdot2\\\sf\Delta=9-8\\\sf\Delta=1\\\sf x=\dfrac{-b\pm\sqrt{\Delta}}{2a}\\\\\sf x=\dfrac{-(-3)\pm\sqrt{1}}{2\cdot1}\\\\\sf x=\dfrac{3\pm1}{2}\begin{cases}\sf x_1=\dfrac{3+1}{2}=\dfrac{4}{2}=2\\\\\sf x_2=\dfrac{3-1}{2}=\dfrac{2}{2}=1\end{cases}\end{array}}$