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I need help NOW !!!!!!!!

I need help NOW !!!!!!!!-example-1
User Dan Streeter
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1 Answer

26 votes
26 votes

Answer:


x=1~ \text{and}~ x = -6~ \text{but}~ -6 ~\text{is extraneous.}

Step by step explanation:


2-x = 3-√(7-3x)\\\\\implies √(7-3x) = 3-2+x\\\\\implies √(7-3x) = 1+x\\\\\implies 7-3x = (1+x)^2\\\\\implies 7-3x=1+2x+x^2\\\\\implies x^2+3x+2x+1-7=0\\\\\implies x^2+5x -6 =0\\\\\implies x^2+ 6x-x -6=0\\\\\implies x(x+6)-(x+6)=0\\\\\implies (x-1)(x+6)=0\\\\\implies x =1~~, x = -6


x=-6~ \text{Doesn't satisfy the original equation, so it is an extraneous solution.}

User BeWu
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