sammy12
I need help on this question.It's about absolute values.I am getting 2 answers for this question.
x=3 and x=-1/3 .Please can you check it for me. I will draw the question.
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sammy12
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|dw:1324193862149:dw|
saifoo.khan
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|dw:1324193950856:dw|
sammy12
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saifoo.khan
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your answers are correct.
sammy12
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but answer is -1/3 on the paper
yajjnobee
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th answer is x=2
sammy12
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x=-1/3
sritama
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i think x=2
sammy12
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can you show me.
yajjnobee
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ahm, 2x-x-1-1=0
x-2=0
x=2//.
sritama
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i have squared both side
sammy12
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this question is from math tournament.I have the answer sheet.The answer is x=-1/3
sritama
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how did u get -1/3 ?
sammy12
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i changed the signs after the equal sign
sammy12
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i am getting 2 answers x=3 (without changing the signs) .x=-1/3(with changing the signs
sritama
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3 ??
sammy12
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2x-1=x+2 The answer is x=3
sammy12
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2x-1=-x-2 The answer is x=-1/3
sritama
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x-2 ? not x-1 ?
sritama
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sorry it is + not -
sammy12
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i changed the signs
sammy12
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after the equal sign
yajjnobee
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2x-x-1+2=0
x-3=0
x=3
yajjnobee
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2x-1+x+2=0
3x+1=0
3x=-1
x=-1/3
sritama
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square both side,u will find ur answers are correct
sammy12
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so my answers are right.
yajjnobee
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yeah
sritama
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yes,i think that
sammy12
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but the answer is x=-1/3 on the paper.
sritama
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there is nothing wrong with x=3 , it is also right
sammy12
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Thank you so much