Respuesta :
Answer:
x=7 x=-1
Step-by-step explanation:
2[tex](x-3)^{2}[/tex]-4=28
2[tex]x^{2}[/tex]-12x+18-4=28
2[tex]x^{2}[/tex]-12x+14=28
2[tex]x^{2}[/tex]-12x=28-14
2[tex]x^{2}[/tex]-12x-14=0
(x-7)(x+1)
x=7 , x=-1
Answer:
x=7 x=-1
Step-by-step explanation:
2[tex](x-3)^{2}[/tex]-4=28
2[tex]x^{2}[/tex]-12x+18-4=28
2[tex]x^{2}[/tex]-12x+14=28
2[tex]x^{2}[/tex]-12x=28-14
2[tex]x^{2}[/tex]-12x-14=0
(x-7)(x+1)
x=7 , x=-1