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# What is the Answer to this Simultaneous Equation ? watch

1. x+y=2
4y^2-x^2=11

I got x= -1/2 , x=7/2
y= 5/2 , y= -3/2

is that correct ? if not , what did you get and how ?
Thanks.
2. No. The easiest way to check if your solutions are correct is to substitute back into the equation and check that the equality is true.

What have you done to get those answers?
3. (Original post by morgan8002)
No. The easiest way to check if your solutions are correct is to substitute back into the equation and check that the equality is true.

What have you done to get those answers?
He's duplicated posted this thread and is only active on the other duplicate where people have replied to him there, just a heads up.

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