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FromTheMoon [43]
3 years ago
9

Solve for x: x^2 + 14x + 49

Mathematics
1 answer:
Kaylis [27]3 years ago
3 0

Answer: -7twice

Step-by-step explanation:

This is a question on root of quadratic equation. The interpretation of the question

x² 14x + 49 is

x² + 14x + 49 = 0.meaning that we are to find two possible values for x that will make the expression equal 0.

We can use any of the methods earlier taught. For the purpose of this class, I am using factorization methods

x² + 14x + 49 = 0

Now, find the product of the first and the last terms, is

x² × 49 = 49ײ

Now find two terms such that their productbis 49x² and their sum equals 14x, the one in the middle.

We have several factors of 49x² but only one will give sum of 14x. Because of the time, I will only go straight to the required factors .

49x² = 7x × 7x and the sum gives 14x the middle terms..

Now we now replace the middle one by the factors and then factorize by grouping.

x² + 14x + 49 = 0

x² + 7x + 7x + 49 = 0

x(x + 7) + 7(x + 7) = 0

(x + 7)(x + 7). = 0

Now to find this value of x,

x + 7 = 0

x. = -7twice.

The root of the equation = -7twice.

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Answer:
3/5*8/9=8/15; A

Explanation:
First, you want to multiply both of the numerators together. 3*8=24.
Then, you want to multiply both of the denominators together. 5*9=45.
If you put the numerator and the denominator together, it comes out to be 24/45.
Lastly, you want to simplify 24/45. Divide those both by 3, and you get 8/15.
Hope that helps!
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1 year ago
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How is the equation y=2x similar the equation y=2x + 3 in how is it different?
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Step-by-step explanation:

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If i have 2 1/2 pans of brownie left, and my sister eats 1/3 of the brownies, how much of a pan has she eaten
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Answer:

5/6 a pan of brownies.

Step-by-step explanation:

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There are three identical desks, each with two drawers. In one desk, both drawers contain gold coins. In another desk, both draw
djverab [1.8K]

Answer:

P ( B / A ) = 1/3

Step-by-step explanation:

Solution:-

You select a drawer and select a coin from that drawer.

Let A denote the event that the coin that you select is silver.

Let B denote the event that the other coin in the drawer is gold.

You are equally likely to pick any coin, so:

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There are 6 different ways you could have selected a coin. Only one of them results in you selecting a silver coin AND the other coin in the drawer being gold, so:

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By the definition of conditional probability:

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3 years ago
Please help will give lots of points!
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The answer is

\frac{15}{2}
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