Question

2x ao quadrado menos 5x mais 3 igual a zero

Answer 1

Olá, bom dia!

$2x^2-5x+3=0\\\\Coeficientes:\;a=2,\;b=-5\;e\;c=3\\\\\Delta=b^2-4ac\\\Delta=(-5)^2-4\cdot2\cdot3\\\Delta=25-24\\\Delta=1\\\\x=\dfrac{-b\pm\sqrt{\Delta}}{2a}\\\\x=\dfrac{-(-5)\pm\sqrt{1}}{2\cdot2}\\\\x=\dfrac{5\pm1}{4}\\\\x_1=\dfrac{5+1}{4}=\dfrac{6}{4}=1,5\\\\x_2=\dfrac{5-1}{4}=\dfrac{4}{4}=1$




Espero ter ajudado.
Bons estudos!