Step-by-step explanation:
3.9 percent
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Answer:
x = -2
Step-by-step explanation:
since y is common in both equations, you can equate them to be equal
-2x² - 4x + 5 = 2x² + 4x + 5
4x² + 8x = 0
factor out 4x
4x(x + 2) = 0
divide both sides by 4x
x + 2 = 0
x = -2
Answer:
4 : 39
5 : 52
6 : 67
7 : 77
Step-by-step explanation:

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