H0a1rkeraliBosq H0a1rkeraliBosq
  • 17-03-2017
  • Mathematics
contestada

What are the solutions to the equation?
x2 + 2x + 1 = 36
Question options:

{-6, 1}

{-5, 7}

{-7, 5}

{-6, 6}

Respuesta :

ghanami
ghanami ghanami
  • 18-03-2017
Hello
x²+2x+1 = 36
are the solutions {-7, 5} because : 
(-7)²+2(-7)+1 =49-14+1 =50-14=36
(5)²+2(5)+1=25+10+1=36
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