SOLUTION: Find the solution set of the following equation using the method of your choice: Y=(x+3)^2 9x+2y=-22

Question 1103637: Find the solution set of the following equation using the method of your choice:
Y=(x+3)^2
9x+2y=-22
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
1) y = (x+3)^2 = x^2 +6x +9
:
2) 9x +2y = -22
:
solve equation 2 for y
:
3) y = -4.5x -11
:
set equation 1 = equation 3 and solve for x
:
x^2 +6x +9 = -4.5x -11
:
x^2 +10.5x + 20 = 0
:
(x + 2.5) * (x + 8) = 0
:
**************************************
solution set is x = 2.5, y = 0.25 and
x = -8, y = 25
**************************************
:
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