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Sholpan [36]
3 years ago
6

Rewrite the function by completing the square f(x)=x^2-4x-26

Mathematics
1 answer:
leonid [27]3 years ago
8 0

Answer:

(x - 2)² - 30

Step-by-step explanation:

To complete the square

add/subtract ( half the coefficient of the x- term )² to x² - 4x

f(x) = x² + 2(- 2)x + 4 - 4 - 26 = (x - 2)² - 30

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Solnce55 [7]
A.) Simplifying the equation would lead you to 15x^2-3x+9

b.) You know your answer is correct because you're adding the two polynomials together. 9x^2+6x^2 is 1tx^2. Now you have 2x-5x and since the negative is bigger, you get -3x. Then 5+4 is 9. You have no like terms therefore your answer is 15x^2-3x+9
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4 years ago
What is the excluded value?<br><br> 0<br><br> 1/2<br><br> 1
nekit [7.7K]

Answer:

excluded value is 1/2

Step-by-step explanation:

The excluded value is the value when the denominator is equal to zero

1 -2x =0

Subtract 1 from each side

-2x = -1

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7 0
3 years ago
Find the cost of 4 tubes of oil paint and 2 canvases
Alona [7]

Answer:

You have to put in the whole word problem

Step-by-step explanation:

5 0
4 years ago
What is the volume of both shapes ?
Nataly [62]

Answer:

314 ft cubed

Step-by-step explanation:

To find the volume, find the volume of the cone and add it to the volume of the cylinder.

The volume of a cone is

V= \frac{1}{3}\pi r^2 h=  \frac{1}{3}\pi (5^2)(12) =  \frac{1}{3}\pi (25)(12)= \frac{1}{3}\pi *300 = 100\pi.

The volume of the cylinder is

V=\pi (5^2)(4)= \pi (25)(4)= 100\pi

Together their volume is 100\pi+100\pi=200\pi \\200\pi =314ft^3

6 0
3 years ago
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3 0
3 years ago
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