Seudónimo Seudónimo
  • 06-04-2018
  • Mathematics
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find the solutions to this system. y= x^2 - 2x - 2 y = 4x +5

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mkryukova19 mkryukova19
  • 06-04-2018
x²-2x-2=4x+5
x²-6x-7=0
(x-7)(x+1)=0
x=7, x=-1
if x=7, y=4*7+5=28+5=33   (7,33)
if x=-1, y=-4+5=1  (-1,1)
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