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Lesechka [4]
3 years ago
11

How do you solve 2x^2 - 7x -5= 0 in quadratic form?

Mathematics
2 answers:
lesantik [10]3 years ago
7 0

Answer:

Once the equation is in standard form, factor the quadratic expression. 2x2 + 7x + 3 = 0 (2x + 1)(x + 3) = 0. Using the Zero Product Property set ...

2x2 + 7x = -3

2x2 + 7x + 3 = 0

Once the equation is in standard form, factor the quadratic expression.

2x2 + 7x + 3 = 0

(2x + 1)(x + 3) = 0

Using the Zero Product Property set each factor equal to 0 and solve for x.

2x + 1 = 0  

2x + 1 - 1 = 0 - 1 x + 3 = 0

2x = -1 x + 3 - 3 = 0 - 3

2x 2 = -1 2 x = -3

x = -1 2  

The solutions to the equation are -1 2 and -3.

Ray Of Light [21]3 years ago
5 0

Answer:

x^1 = 7-square root89/4

x^2 = 7+square root89/4

Step-by-step explanation:

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200 meters 2:35/mile or 1:36/km 2:52/mile or 1:47/km

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800 meters 3:23/mile or 2:06/km 3:48/mile or 2:21/km

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1 mile 3:43/mile or 2:19/km 4:13/mile or 2:37/km

5K 4:04/mile or 2:31/km 4:34/mile or 2:50/km

10K 4:14/mile or 2:38/km 4:45/mile or 2:57/km

Half Marathon

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7 0
3 years ago
In a randomly generated list of numbers from 0 to 8 what is the chance thag each number will occur?
Vitek1552 [10]

Answer:

1/9

Step-by-step explanation:

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6 0
3 years ago
Help me plz on the question thx
GrogVix [38]
1/2 is the answer. I hope this helps
4 0
3 years ago
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lara31 [8.8K]

Answer:

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Step-by-step explanation:

One pound (lb) is equal to 16 (oz). So, if you are trying to find how many ounces are in one pound, you have to divide the number of pounds by the 16,   the amount of ounces in one pound.

6 0
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</span></span></span>
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3 years ago
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