Question
3 Solve the simultaneous equations
x² + y² = 34
x – y = 2
x² + y² = 34
x – y = 2
Answers
bobpursley
x=2+y
x^2=4+4y+y^2
so 4+4y+y^2+y^2=34
y^2+2y-30=0
y=(-2+-sqrt(4+120))/1=-1+- sqrt31
Put each of those y solutions into either equation, and solve for possible x, then test the solutions.
x^2=4+4y+y^2
so 4+4y+y^2+y^2=34
y^2+2y-30=0
y=(-2+-sqrt(4+120))/1=-1+- sqrt31
Put each of those y solutions into either equation, and solve for possible x, then test the solutions.
Steve
x^2+y^2 = 34
Hmmm. 3^2+5^2 = 34
Hmmm. 3^2+5^2 = 34
Anonymous
Where did u get 4y from
Anthony
2and 0
ishaku
I response