Question

Resolva As equações do 2-grau
A) 2ײ-5× 3=0
B)-ײ+3×-2=0

Answer 1

A) 2x²-5x+3=0
a=2
b=-5
c=3

Δ=b²-4.a.c
Δ=(-5)²-4.2.3
Δ=25-24
Δ=1

x¹=+5+1/4=6/4
x²=+5-1/4=1


B)-x²+3x-2=0
a=-1
b=3
c=-2

Δ=b²-4.a.c
Δ=3²-4.(-1).(-2)
Δ=9-8
Δ=1

x¹=-3+1/-2=1
x²=-3-1/-2=2

Espero ter ajudado!