Hashir
guys ........ x+y=2
and x-y=-2
how can i solve it
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hba
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what do u wanna find
harsimran
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do it thru elimination!!
Hashir
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what is elimination
hba
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x+y=2
x-y=-2
2x=0
x=0
Hashir
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HOW >??? i m confused
hba
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0+y=2
y=2
hba
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i am also confused
harsimran
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add both the equations...y will be eliminated!!
mathslover
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x+y=2-------------1)
x-y=-2 ------------2)
solving for x in 1st equation :
x+y=2
x=2-y
now put this value in 2nd equation
x-y=-2
2-y-y=-2
2-2y=-2
-2y=-4
y=\(\frac{-4}{-2}\)
y=2
x = 2-y = 2-2=0
hba
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how did i do it
Hashir
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didnt get you guys
mathslover
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Try to study it ... from videos ..
virtus
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@hba and Hashir i am rather amazed at how fast memory lost and mental retardation can occur
harsimran
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what is to understnd...add both the equations...2 x = 0
Hashir
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@virtus : short term memory loss :D
hba
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yeah right
MathDoodler
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You can use a metrics if you don't understand elimination or substitution
hba
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ghajni
Hashir
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oh whats a matrix ... is it matrix .... the movie ... i love that movie
Hashir
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:P
ujjwal
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can't you add equatins @Hashir ?
hba
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what is that
Hashir
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@ujjwal : what equation ???
Hashir
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equation ... i dont know what is an equation
hba
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|dw:1342265541343:dw|
Hashir
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cmon guys take it easy on a 7 year old -
Hashir
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2x+2x=5x i guess ???
hba
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yeah brilliant
hba
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u are right
MathDoodler
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Oh Oh Oh I have the anwser..... In the great words of Yoda, who has all the answers.
\[ \pi, \sqrt{-1} \hspace{3mm} \sqrt{64}\]
Delicious it was.
Get it HA
hba
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its not a pizza that it would be delicious
Romero
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Set up the augmented matrix
angela210793
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|dw:1342267194746:dw|
arbab11
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you should add both equations as one y is wth postv sign nd othr is wth negtv sign so they will cancel each other nd both x have postv sign so the will be addes nd their sum will 2x nd right side of equation again 2 is wth pstv nd ngtv sign so they will cancl each othr nd x will b equal to 0
Hashir
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|dw:1342278153762:dw|
Hashir
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@angela210793
muhammad9t5
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i can help you....!!!!!
muhammad9t5
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do you know about matrix?
angela210793
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|dw:1342343085258:dw|