Could someone please check these substitution problems for me??

1. { 7y^2 +x^2 = 64
{ x+y=4

For my answer I got x = 1.07.

2. { x^2+y^2+2x+2y=0
{x^2+y^2+4x+6y+12=0

For my answer I got x=0.

Question

Could someone please check these substitution problems for me??

1.	{ 7y^2 +x^2 = 64
        { x+y=4

For my answer I got x = 1.07.



2.	{ x^2+y^2+2x+2y=0
        {x^2+y^2+4x+6y+12=0

For my answer I got x=0.

anonymous · Answer

what did u get for y?

mertsj · Answer

I don't agree with # 1.

anonymous · Answer

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mertsj · Answer

And I don't agree with # 2 either.

anonymous · Answer

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anonymous · Answer

Thank you so much @dalia_lam , do I still have to solve for y in the first problem?

anonymous · Answer

you can if you want to :), just plug the value in for x

anonymous · Answer

so y2= 3 and y1= +/- 2? and for the second one would we just plug in x as well?