SOLUTION: Solve the equations x^2+y^2=36 x=2y+6 Please help :)

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Question 924529: Solve the equations
x^2+y^2=36
x=2y+6
Please help :)
Found 2 solutions by Fombitz, stanbon:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Substitute,
%282y%2B6%29%5E2%2By%5E2=36
4y%5E2%2B24y%2B36%2By%5E2=36
5y%5E2%2B24y=0
y%285y%2B24%29=0
Two solutions:
y=0
Then,
x=2%280%29%2B6
x=6
.
.
.
5y%2B24=0
5y=-24
y=-24%2F5
Then,
x=2%28-24%2F5%29%2B30%2F5
x=-48%2F5%2B30%2F5
x=-18%2F5

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Solve the equations
x^2+y^2=36
x=2y+6
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Substitute for "x" and solve for "y"::
(2y+6)^2 + y^2 = 36
4y^2 + 24y + 36 + y^2 = 36
5y^2 + 24y = 0
y(5y+24) = 0
y = 0 or y = -24/5 = -4.8
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Cheers,
Stan H.
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