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svet-max [94.6K]
3 years ago
9

Factorize completely :4x² - y² + 4y - 4​

Mathematics
2 answers:
geniusboy [140]3 years ago
8 0

Step-by-step explanation:

the answer is (2x-y+2) (2x+y-2)

lana66690 [7]3 years ago
5 0

Answer:

<em>(2x-y+2)(2x+y-2)</em>

Step-by-step explanation:

4x² - y² + 4y - 4=

=(2x)²-(y²-4y+4)

=(2x)²-(y-2)²

= [2x-(y-2)][2x+(y-2)]

<em>=(2x-y+2)(2x+y-2)</em>

a²-b²=(a-b)(a+b)

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A catering service offers 4 appetizers, 9 main courses, and 7 desserts. A customer is to select 3 appetizers, 2 main courses, an
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Answer:

In 5040 ways.

Step-by-step explanation:

To solve this problem we will use combination without repetition which means:

C ( n k) = (n₁ k₁) (n₂ k₂) (n₃ k₃) = (4 3)  (9 2)  (7 3) =

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6 0
3 years ago
During batting practice, two pop flies are hit from the same location, 2 s apart. The paths are modeled by the equations h = -16
drek231 [11]

9514 1404 393

Answer:

  40.5 ft

Step-by-step explanation:

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5 0
3 years ago
Read 2 more answers
The endpoints of jk are j(–25, 10) and k(5, –20). what is the y-coordinate of point l, which divides jk into a 7:3 ratio
Trava [24]
The correct answer for this question is this one: <span>(-4, -11)
</span>In order to solve this,

Let k1 = 7/10 = fraction of the first part
Let k2 = 3/10 = fraction of the second part

Then, use solve for x and y

x = (k1(x2) +k2(x1)) / (k1+k2)
y = (k1(y2) +k2(y1)) / (k1+k2)

x = (7/10 * 5 + 3/10 * -25) / (7/10 + 3/10 )
<span>x = -8 / 2
x = -4

y = (7/10 * -25 + 3/10 * 10) / (7/10 + 3/10)
y = -14 + 3
y = -11

Hope this helps answer your question. Have a nice day!</span>
4 0
4 years ago
Read 2 more answers
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