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x²-3x-10 = 0
x -5
x +2
-5x+2x = -3x
(x-5)(x+2) = 0
x-5 = 0 x+2 = 0
x = 5 x= -2
CS = (-2;5)
x²-6x+5=0
x -5
x -1
-x-5x = -6x
(x-5)(x-1) = 0
x-5 = 0 x-1=0
x = 5 x= 1
CS = (1; 5)
x²-12x+36=0
x -6
x -6
(x-6)(x-6) = 0
x-6 = 0 x-6 = 0
CS =(6)
4x²+36x+81=0
2x +9
2x +9
18x+18x = 36x
(2x+9)(2x+9)=0
2x+9 = 0 2x+9 = 0
2x= -9 2x = -9
x = -9/2 x = -9/2
CS = (-9/2)
x²-6x=27
x²-6x-27=0
x -9
x +3
(x-9)(x+3) = 0
x-9 = 0 x+3=0
x = 9 x= -3
CS = (-3; 9)
2x²-9x-35=0
2x +5
x -7
-14x + 5x = -9x
(2x+5)(x-7) = 0
2x+5 = 0 x-7 = 0
2x = -5 x = 7
x = -5/2
CS = (-5/2; 7)
0 = x² + 3x + 10
x² + 3x + 10 = 0 ---> Fórmula General.
2) -x² -6x + 5 = 0 ---> Multiplicamos Por -1 Para Que Cumpla La Fórmula General O Factorizamos El Signo...
- (x² + 6x - 5) = 0
3) -x² -12x + 36 = 0 ---> Mismo Procedimiento Que El Anterior.
- (x² +12x + 36) = 0
Solución ..
-(x+6)² = 0
x= 6
4) -4x² + 36x + 81 = 0
- (4x² - 36x - 81) =0
5) -x² - 6x = 27
0= x² + 6x + 27
6) -2x² - 9x - 35 = 0
- (2x² + 9x + 35)= 0