Question

x + 2y = 1 find x and y​

Answer 1

Step-by-step explanation:

Correct option is

C

xϵ{−

2

1

,1}

y=x

2

−1 or x=2y+1

Put value of y in equation

Then x=2(x

2

−1)+1

x=2x

2

−2+1

2x

2

−x−1=0

2x

2

−2x+x−1=0

2x(x−1)+1(x−1)=0

(2x+1)(x−1)=0

then 2x+1=0 or 4x−1=0

Then x=−

2

1

or x=1