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Viktor [21]
3 years ago
10

Express x2- 8x + 5 in the form (x -a)2-b where a and b are integers.

Mathematics
2 answers:
alukav5142 [94]3 years ago
7 0

Answer:

(x-4)^{2}-11

Step-by-step explanation:

x² - 8x + 5 = x² - 8x + (16 - 16) + 5      {we just added 16 and subtractEd it }

                 = (x - 4)² - 16 + 5               {<u><em>Reason </em></u>:  x² - 8x + 16 = (x - 4)² }

                 = (x - 4)² - 11

bija089 [108]3 years ago
5 0

Answer:

(x - 4)² - 11

Step-by-step explanation:

Given

x² - 8x + 5

To obtain the required form use the method of completing the square.

add/subtract ( half the coefficient of the x- term)² to x² - 8x

= x² + 2(- 4)x + 16 - 16 + 5

= (x - 4)² - 11

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Solve this aswell, if anyone wants to help me with my algebra 1 work, message me at 7177231064 need to pass summer school
Elza [17]

Answer:

Brainleist!

Step-by-step explanation:

V = (36 x 11) / 3

V = 396/3

V = 132 in^3

7 0
3 years ago
A building in a city has a rectangular base. The length of the base measures 75 ft less than three times the width. The
MariettaO [177]

The dimensions of the rectangular base of the building with the given perimeter are 120ft and 285ft.

<h3>What are the dimensions of the rectangle base?</h3>

The perimeter of rectangle is expressed as;

P = 2( l + w )

Given the data in the question;

Let x represent the width of the rectangular base.

  • Width w = x
  • Length = l = 3x-75
  • Perimeter P = 810ft

Plug these values into the equation above.

P = 2( l + w )

810 = 2( (3x-75) + x )

810 = 6x - 150 + 2x

810 = 8x - 150

8x = 810 + 150

8x = 960

x = 960/8

x = 120

Hence,

Width of the rectangle = x = 120ft

Length of the rectangle = 3x-75 = 3(120) - 75 = 285ft

Therefore, the dimensions of the rectangular base of the building with the given perimeter are 120ft and 285ft.

Learn more about rectangles here: brainly.com/question/17043956

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7 0
2 years ago
Write as a product of two polynomials.
Wittaler [7]

Answer:

  1. (a-2)(3a-5)
  2. (b-3)(5b-17)

Step-by-step explanation:

Recognize that b-a = -(a-b). (Reversing the order of a difference changes its sign.)

1. 3(a-2)² -(2-a) = 3(a-2)² +(a-2) = (a-2)(3(a-2) +1)

... = (a -2)(3a -5)

2. 2(3-b) +5(b-3)² = (b -3)(-2 +5(b -3))

... = (b -3)(5b -17)

5 0
3 years ago
You are on a 5.6-mile run and have already run 1.98 miles. How many more miles do you need to run?
Likurg_2 [28]

Answer:

3.62 miles need to be run

4 0
3 years ago
Read 2 more answers
Help me please thanks:)))
yaroslaw [1]
125 = 5 * 5 * 5 = 5³

90 = 2 * 3 * 3 * 5 = 2 * 3² * 5

92 = 2 * 2 * 23 = 2² * 23
3 0
3 years ago
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