Respuestas

  • Usuario de Brainly
2013-03-12T20:33:47+01:00

a) 2x² - 32 = 0

x² = 32 / 2

x = √ 4…..x1= 2…………..x2= - 2

b) 2x²  - 32 x =0

x( 2x – 32) = 0

x = 0 …………..2x -32 = 0

x = 0 …………….x = 32/2

x = 0…………….x = 16

 

c) x² - x = 0

x (x – 1) = 0

x= 0 …………….x -1 = 0

x= 0……………..x = 1

 

d ) 6x² + 12x = 0

6x (x + 2) = 0

X = 0 ……………..x = - 2

 

e) 1/4x² + x = 0

x (1/4x + 1) =0

x = 0 ………….1/4x = - 1

x= 0…………….x = - 4

 

f) 1/16x²  =  ¼

x²  = ¼ : 1/16

x ² = 4

x = √4

x1= 2……x2= -2

 

g) x² + x/2 + 2 = 2

x² + x/2 = 0

x (x + ½) =0

x = 0 ……..x+1/2 = 0

x= 0 ………….x = - ½

h) x² + x – 2 = 0

x1 = 1………..x2= - 2

 

i ) 5x + x² = 6

x² + 5x – 6 = 0

x1 = 1………x2= -6

 

j)2x² +x – 3 = 0

x1= 1………….x2= -3/2

 

k) x² +x/2 – ½ = 0

x1 = ½……….x = - 1

l ) 2x² = x + 1

2x² - x – 1 = 0

X1 = 1…………x2= - ½

 

 

espero que te sirva, salu2!!!