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x2+y=5,x2+y2=7
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Solution
(
x=√6,
y=−1
x=−√6,
y=−1
x=√3,
y=2
x=−√3,
y=2
)
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Solution steps
Solve by:
One step at a time
[
x2+y=5
x2+y2=7
]
Subtract the equations
x2+y=5
−
x2+y2=7
x2+y−(x2+y2)=5−7
Simplify
−y2+y=−2
Solve −y2+y=−2:y=−1,y=2
Plug the solutions y=−1,y=2 into x2+y=5
For x2+y=5, subsitute y with −1:x=√6,x=−√6
For x2+y=5, subsitute y with 2:x=√3,x=−√3
Verify solutions by plugging them into the original equations
Therefore, the final solutions for x2+y=5,x2+y2=7 are