Question

O valor das raizes da equacao incompleta do 2°grau do ײ - 3x + 2= 0 é ?

Answer 1

Oi...

$x^2-3x2=0\\\\Coeficientes:\;a=1,\;b=-3\;e\;c=2\\\\\Delta=b^2-4ac\\\Delta=-3^2-4\cdot1\cdot(2)\\\Delta=9-8\\\Delta=1\\\\x=\dfrac{-b\pm\sqrt{\Delta}}{2a}\\\\x=\dfrac{3\pm\sqrt{1}}{2\cdot1}\\\\x=\dfrac{3\pm1}{2}\\\\x_1=\dfrac{3+1}{2}=\dfrac{4}{2}=2\\\\x_2=\dfrac{3-1}{2}=\dfrac{2}{2}=1$

Espero ter ajudado.