Question

Me ajudem a resolver por favor
A) 3×^2-9×+6=0
B) 5×^2-15×+10=0
C) -2×^2-6×+4=0

Answer 1

a) 3x*2-9x+6 = 0
6x - 9x +6 =0
-3x = -6 ( - com - = +)
x = 6/3
x=2

b) 5x*2 - 15x + 10 =0
10x - 15x + 10 =0
- 5x = -10 ( - com - = +)
x = 10/5
x = 2

c) -2x*2-6x+4 = 0
- 4x - 6x +4 = 0
-10X = -4 ( - com - = +)
x = 4/10
x = 2/5