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iogann1982 [59]
3 years ago
6

Factor the polynomial 4x^2-12x^2+7x-21 completely

Mathematics
1 answer:
sergejj [24]3 years ago
6 0

Answer:

4x^2-12x^2+7x-21\\\mathrm{Add\:similar\:elements:}\:4x^2-12x^2=-8x^2\\=-8x^2+7x-21

Step-by-step explanation:

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Please help me choose the correct answer to find the answer
Naddika [18.5K]

Answer:

y = -3x + 12

Step-by-step explanation:

6x + 2y = 24 *subtract 6x from both sides*

2y = -6x + 24 * divide both sides by 2*

y = -3x + 12

6 0
3 years ago
hat is the rectilinear distance between​ (−3, −6) and​ (14, −2)? A. 3 B. 21 C. 25 D. 18.79 E. 7 F. 15
Fofino [41]

Answer:

F. 15

Step-by-step explanation:

To obtain the rectilinear distance between :

(3, 6) and (14, 2)

x1 = 3 ; x2 = 14 ; y1 = 6 ; y2 = 2

(3, 6), (14, 2)

USing the Rectilinear distance formula :

|X2 - x1 | + |y2 - y1 |

| 14 - 3 | + |2 - 6 |

|11 | + |- 4 |

11 + 4

= 15

5 0
3 years ago
Solve the system with substitution<br> 72 +10y = 36<br> y = 2x + 9
mr_godi [17]

Answer:

x= -63 y= -117

Step-by-step explanation:

72+10(2x+9)=36

72+20x+90=36

162+20x=36

20x=-126

×= -63

y= 2(-63)+9

y=-126+9

y= -117

8 0
3 years ago
Ahmed is solving the following equation for xxx.
Dennis_Churaev [7]

Answer:

No

Step-by-step explanation:

An extraneous solution is a root of a transformed equation which is not a root of the original equation because it was not included in the domain of the original equation.

Ahmed is solving 2\sqrt[3]{x-7}+11=3 for x.

His steps were:

\begin{aligned}2\sqrt[3]{x-7}&=-8\\  \sqrt[3]{x-7}&=-4\\  \left(\sqrt[3]{x-7}\right)^3&=(-4)^3\\  x-7&=-64 \end{aligned}

Since cube roots <u>do not give two solutions when solved</u>, it is <u>not necessary </u>to check his answers for extraneous solutions.

7 0
3 years ago
Solve 2(x + 1) = 2x + 2.<br> All real numbers<br> No solution<br>0 <br>1
nadya68 [22]

Answer:

2(x+1)= 2x+2.

Step-by-step explanation:

Because, there is a on infront of x so you do 2x1=2 so 2x+2 because 2x1=2

8 0
3 years ago
Read 2 more answers
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