Question

2 x ao quadrado - 3x = 2x - 1,preciso da conta completa!​

Answer 1

2x²—3x=2x—1

2x² —3x —2x = —1

2x² — 5x + 1=0

onde:

a = 2 ; b = —5 ; c = 1

∆ = b² —4 .a.c

∆ = (—5)²—4.2.1

∆ = 25 — 8

∆ =17

$\large\boxed{\boxed{{x_{1,2}=\frac{-b\pm\sqrt{\Delta}}{2.a}}}}}}$

$x_{1,2}=\frac{5\pm\sqrt{17}}{2.1}$

$x_{1,2}=\frac{5\pm\sqrt{17}}{2}$

Dúvidas??Comente!!