Rubymistbell
Rubymistbell Rubymistbell
  • 01-03-2017
  • Mathematics
contestada

Solve the equation
Also look for extraneous solutions
Please show your work and explain the steps

Solve the equation Also look for extraneous solutions Please show your work and explain the steps class=

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rainbowdash8142
rainbowdash8142 rainbowdash8142
  • 01-03-2017
−3=−x+√​−2(x−3)​−3=−x+√​2(x−3)​​​ı−3+x=ı√​2(x−3)​​​
(x−3)​2​​=−2(x−3)6x​2​​−6x+9=−2x+6x​2​​−6x+9+2x−6=0x​2​​−4x+9−6=0x​2​​−4x+3=0(x−3)(x−1)=0x=3,1x=3

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Аноним Аноним
  • 01-03-2017
-3 = -x + √(-2x + 6)
Squaring both sides, 
9 = -x² - 2x + 6
x² + 2x + 3 = 0
x² -x + 3x + 3 = 0
-x(x + 1) 3(x + 1)
(3 - x) (x + 1) = 0
x = 3 or -1

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