SOLUTION: Use the elimination method to find the TWO solutions of this system. Mark TWO answers. {y=9(x+4)^2 � 81 {y=&#8722;9(x+4)^2+81 (3, 0) (-3, 0) (5, 0) (-1, 0)

Click here to see ALL problems on Equations

Question 1080571: Use the elimination method to find the TWO solutions of this system. Mark TWO answers.
{y=9(x+4)^2 � 81
{y=−9(x+4)^2+81

(3, 0)

(-3, 0)

(5, 0)

(-1, 0)

(-7, 0)

(-9, 0)

Found 2 solutions by MathLover1, MathTherapy:
Answer by MathLover1(20849) (Show Source):
You can put this solution on YOUR website!

.......

solutions:
, => -> point (,)
and
, =>-> point (,)

Answer by MathTherapy(10551) (Show Source):
You can put this solution on YOUR website!
Use the elimination method to find the TWO solutions of this system. Mark TWO answers.
{y=9(x+4)^2 � 81
{y=−9(x+4)^2+81

(3, 0)

(-3, 0)

(5, 0)

(-1, 0)

(-7, 0)

(-9, 0)

------- eq (i)
----- eq (ii)
2y = 0 ------- Adding eqs (ii) & (i)
y = 0
------- Substituting 0 for y in eq (i)
---------- Adding 81 to both sides
------------- Dividing each side by 9
-------- Taking square root of both sides

x = 3 - 4, OR x = - 3 - 4
x = - 1 OR x = - 7
Solutions:
That's how SIMPLE this is!!

SOLUTION: Use the elimination method to find the TWO solutions of this system. Mark TWO answers. {y=9(x+4)^2 � 81 {y=&#8722;9(x+4)^2+81 (3, 0) (-3, 0) (5, 0) (-1, 0)

SOLUTION: Use the elimination method to find the TWO solutions of this system. Mark TWO answers. {y=9(x+4)^2 � 81 {y=−9(x+4)^2+81 (3, 0) (-3, 0) (5, 0) (-1, 0)