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Degger [83]
2 years ago
12

Find the discriminat 2x^2 + 8x - 9 = 0

Mathematics
1 answer:
alexandr402 [8]2 years ago
3 0

Answer:

2x^2 + 8x - 9 = 0

2x^2 + 8x = 9

2x^2 + x = 9/8

x^2 + x = 9/8×2

x^2 + x = 9/16

2x = √9/16

x = √9/32

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2 years ago
identify the equation that does not belong with the other three. explain your reasoning. 6+x=9 | 15= x+12 | x+9 =11 | 7+x=10
Katena32 [7]
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6 0
3 years ago
Which of the following is the best estimate of the square root of 160
Virty [35]

Answer:

12-13

Step-by-step explanation:

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6 0
2 years ago
Read 2 more answers
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Fed [463]

Answer:

when x = -1,  y = -3

when x = -1,  y = -1

when x = -1,  y = 1

when x = -1,  y = 3

Step-by-step explanation:

x = -1;  plug in y = 2(-1) - 1 = -2 - 1 = -3

x = 0;  plug in y = 2(0) - 1 = 0 - 1 = -1

x = 1;  plug in y = 2(1) - 1 = 2 - 1 = 1

x = 2;  plug in y = 2(2) - 1 = 4 - 1 = 3

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Answer:2400

Step-by-step explanation:

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