Math, asked by shams25, 1 year ago

solve X - 2y = 1, 2 x minus y equal 1

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Answered by Anonymous

It is given that

x-2y=1-------×2

2x-y=1

we get

2x-4y=1

2x-y=1

by elimination methode we get

-3y=0

y=0

and

in from eq 1

x-2y=1

x=1+2y=1+2×0=1.

hence x=1 and y=0.

shams25: thanks

shams25: what will be the nature of roots of the equation X square - 3 X equal 4 also find the roots if exist

Answered by PARI1111111

x-2y=1 _____(1)

2x-y=1 _____(2)

(1)*2,

=>2x-4y=2

(2)-(1),

2x-4y=2
-2x+y=-1

=>-3y=1
y=-1/3

2x-y=1
2x-(-1/3)=1
2x+1/3=1
2x=1-1/3
2x=(3-1)/3
2x=2/3
=>x=1/3

x=1/3 and y=-1/3

hope it helps you.....

shams25: thanks

PARI1111111: not to mention.... it's my pleasure : )

shams25: whats you name

PARI1111111: Roshni

PARI1111111: n urs?

shams25: ok

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shams25: shams

PARI1111111: mmm

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solve X - 2y = 1, 2 x minus y equal 1