DerryDelaney
DerryDelaney DerryDelaney
  • 16-10-2016
  • Mathematics
contestada

Solve x^2 + 2x - 15 = 0

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Аноним Аноним
  • 16-10-2016

x^2+2x-15 = 0

x^2-3x+5x-15=0

x(x-3) 5(x-3) =0

x+5 = 0 OR x-3=0

x=-5 OR x=3

It can be either

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MaliaHale
MaliaHale MaliaHale
  • 16-10-2016
x^2+2x=15
x^2+x=15:2
x=1,365
I think this is the solution
Answer Link

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