Respuesta:
1.1. x^2 - 9x = 0
(x+3)(x-3)
x+3=0 , x-3=0
x=-3 , x=3
1.2. v^2+7v+6=0 (aspa simple)
v +6 ----1v
v +1 ---- 6v
(v+6) (v+1)
v+6=0 v+1=0
v=-6 v=-1
1.3. 2x^2-5x-3 = 0
2x +1 ---- -6x
1x -3 ---- 1x
(2x+1) (x-3)
2x+1=0 x-3=0
2x=-1 x=3
x= -1/2
2.1. x^2+4x=21
x^2+4x-21=0
x +7 --- -3x
x - 3 --- 7x
(x+7) (x-3)
x+7=0 x-3=0
x=-7 x=3
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Respuesta:
1.1. x^2 - 9x = 0
(x+3)(x-3)
x+3=0 , x-3=0
x=-3 , x=3
1.2. v^2+7v+6=0 (aspa simple)
v +6 ----1v
v +1 ---- 6v
(v+6) (v+1)
v+6=0 v+1=0
v=-6 v=-1
1.3. 2x^2-5x-3 = 0
2x +1 ---- -6x
1x -3 ---- 1x
(2x+1) (x-3)
2x+1=0 x-3=0
2x=-1 x=3
x= -1/2
2.1. x^2+4x=21
x^2+4x-21=0
x +7 --- -3x
x - 3 --- 7x
(x+7) (x-3)
x+7=0 x-3=0
x=-7 x=3