Question

01)Resolva as equações completas:
a)x2-3x+2=0
b)x-6x+5=0​

Answer 1

Explicação passo-a-passo:

2x-3x+2=0

x=2

x-6x+5=0

-6x=5

x= 5:(-6)

x= 0.833

Answer 2

a) x^2 - 3x + 2 = 0
Delta = b^2 - 4.a.c
Delta = (-3)^2 - 4.1.2
Delta = 9 - 8
Delta= 1
X = -b +- raiz quadrada de Delta / 2 . a
X’ = -(-3) + 1 / 2.1
X’ = 3 + 1 / 2 = 4/2
X’ = 2

X’’ = -(-3) - 1 / 2.1
X’’ = 3 -1 / 2 = 2/2
X” = 1

b)
X - 6x + 5 = 0
Delta = (-6)^2 - 4.1.5
Delta = 36 - 20
Delta = 16

X = -(-6) +- raiz quadrada de 16 / 2.1

X’= 6 + 4 / 2 = 10/2
X’ = 5

X” = -(-6) - 4 /2
X” = 6 - 4/2 = 2/2
X” = 1