Question

Encontre o Xv e Yv, sendo:
Xv = -b/2a Yv = - d/4a
A) X²-5x+6=0
B) X²-3x+6=0
C) - 2x²+6x-2=0

Answer 1

Olá.

$x^{2} -5x+6\\\\Delta=b^{2} -4.a.c\\Delta=25-24\\Delta=1\\\\Xv=\frac{-b}{2a} \\\\Xv=\frac{5}{2} \\\\Yv=\frac{-delta}{4a} \\\\Yv=\frac{-1}{4}$

O processo é igual para todas.

$B)\\\\Delta=9-16\\Delta= -15\\\\Xv=\frac{3}{2} \\\\Yv=\frac{15}{4} \\\\\\C)\\\\Delta=36-16\\Delta=20\\\\Xv=\frac{-6}{-4} =\frac{3}{2} \\\\Yv=\frac{-20}{-8} =[tex]\frac{5}{2}$

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