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Harlamova29_29 [7]
3 years ago
12

Subtract - 7x + 6 from – 2x2 + 9x -2

Mathematics
2 answers:
gregori [183]3 years ago
8 0

Answer:

it might be −2⋅(x+1)⋅(x−2)

Step-by-step explanation:

(1): "x2"   was replaced by   "x^2".

(6 - 7x) -  2x2) +  9x) -  2

Pull out like factors :

-2x2 + 2x + 4  =   -2 • (x2 - x - 2)

Factoring  x2 - x - 2

The first term is,  x2  its coefficient is  1 .

The middle term is,  -x  its coefficient is  -1 .

The last term, "the constant", is  -2

Step-1 : Multiply the coefficient of the first term by the constant   1 • -2 = -2

Step-2 : Find two factors of  -2  whose sum equals the coefficient of the middle term, which is   -1 .

     -2    +    1    =    -1    That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -2  and  1

                    x2 - 2x + 1x - 2

Step-4 : Add up the first 2 terms, pulling out like factors :

                   x • (x-2)

             Add up the last 2 terms, pulling out common factors :

                    1 • (x-2)

Step-5 : Add up the four terms of step 4 :

                   (x+1)  •  (x-2)

            Which is the desired factorization

Anit [1.1K]3 years ago
5 0

Answer:

2x+8

Step-by-step explanation:

I actually did the math

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If f(x) = 4x + k and f (2) = f (1), then calculate the value<br>of K.​
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The weight of a cat is normally distributed with a mean of 9 pounds and a standard deviation of 2 pounds. Using the empirical ru
coldgirl [10]

If the value of the z-score is 1. Then the probability that a cat will weigh less than 11 pounds will be 0.84134.

<h3>What is the z-score?</h3>

The z-score is a statistical evaluation of a value's correlation to the mean of a collection of values, expressed in terms of standard deviation.

The z-score is given as

z = (x - μ) / σ

Where μ is the mean, σ is the standard deviation, and x is the sample.

The weight of a cat is normally distributed with a mean of 9 pounds and a standard deviation of 2 pounds.

Then the probability that a cat will weigh less than 11 pounds will be

The value of z-score will be

z = (11 – 9) / 2

z = 1

Then the probability will be

P(x < 11) = P(z < 1)

P(x < 11) = 0.84134

Thus, the probability that a cat will weigh less than 11 pounds will be 0.84134.

More about the z-score link is given below.

brainly.com/question/15016913

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2 years ago
Let f(x)=5/x and g(x) =2x^2+5x. What two numbers are not in the domain of F o G?
expeople1 [14]
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f(x) has a domain of all real numbers excluding zero
g(x) has a domain of all real numbers
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fog(x)=5/(x(2x+5))
fog(x) has a domain that excludes both zero and -5/2
6 0
3 years ago
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