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igomit [66]
2 years ago
14

What is the complete factorization of the polynomial below? x^3+ 5x^2- x-5

Mathematics
1 answer:
koban [17]2 years ago
7 0

Answer:

(x-1)(x+1)(x+5)

Step-by-step explanation:

x^3+5x^2 - x-5=

x^3-x+5x^2-5=

x(x^2-1) +5(x^2 - 1)=

(x^2- 1)(x+5)=(*)

(x-1)(x+1)(x+5)

(*) A^2 - B^2 =(A-B)(A +B)

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The length of a rectangle is 2 meters more than its width. The area of the rectangle is 80 square meters. What is the length and
insens350 [35]

Answer:

Step-by-step explanation:

Formula

A = L * W

Givens

W = W

L = W + 2

Solution

Area = L*W

Area = (W+2)*W = 80            Remove the brackets.

Area = W^2 + 2W = 80         Subtract 80 from both sides.

Area = w^2+2W-80=80-80  Combine

Area = w^2 +2W-80 = 0        Factor.

Area = (w+10)(w - 8) = 0

W + 10 = 0 won't work

W = - 10 which isn't possible

W- 8 = 0

W = 8

L = 8 + 2 = 10

The answer looks like A

8 0
2 years ago
40 is what percent of 32
Jobisdone [24]
40 = x% of 32

32x = 40
x = 40/32
x = 1.25

multiply by 100 to convert to percentage...

x = 125%

40 is 125% of 32
8 0
3 years ago
Read 2 more answers
Someone please help, i’m so dumb
yan [13]

Answer:

x=3

plug that in

123 is the answer

Step-by-step explanation:

4 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%5Csf%7Bprove%20%5C%3A%20%20that%20%5C%3A%20%20if%20%5C%3A%20%20a%20%5C%3A%20%20number%20%5
lora16 [44]

<h3>let a number = a</h3><h3>it's cube will be a×a×a = a³</h3>

<h3>now atq 2a </h3><h3>it's cube will be </h3><h3>2a ×2a ×2a => 8a³ or (2a)³</h3>

<h2>Hope it helps you </h2>
6 0
2 years ago
Read 2 more answers
Please help i’ll give highest
svlad2 [7]
The answer is:
D) y=-2x-7
8 0
3 years ago
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