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son4ous [18]
3 years ago
8

Find the value of x - if x^3-7x² - x = 0a) 17 (b) 71 c) 7d) 1​

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

Answer:

x = 0

Step-by-step explanation:

x^3-7x^2-x =0\\

Take out common factor

x(x^2-7x-1) = 0

The factor inside the parenthesis cannot be factored

Since there is a common factor that we pulled out of the original equation,

set that x equal to zero and solve

x = 0\\ : Therefore x = 0

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Measurement maths!!<br> If good with area please help
Gennadij [26K]

Answer:

a. 15/2 or 7.5 sqcm

b. 20 sqcm

Step-by-step explanation:

Area of a triangle is (base × height)/2.

A = (5×3)/2

A = 15/2 = 7.5cm^2

The area of a parallelogram is just base × height, but yoy have to choose wisely what is the base and height. These two measurements must be perpendicular. So the 4 and 5 are perpendicular. We won't use the measurement 6cm at all.

Area = 4×5

Area = 20 sqcm

4 0
1 year ago
Solve.
Serggg [28]

Answer:

The solution is (4, 0)

Step-by-step explanation:

Using Linear combination method to solve:

2d + e = 8\\d - e = 4\\

Since "e" have the same coefficient in both equation with opposite operator; we will add.

(2d + d) + (e - e) = (8 + 4)\\3d = 12\\

Divide both side by coefficient of d which is 3

\frac{3d}{3}  = \frac{12}{3} \\d = 4\\

Since d = 4; put 'd' into any of the equation to get 'e'

2d + e = 8\\2(4) + e = 8\\8 + e = 8\\e = 8 - 8\\e = 0\\

Therefore, the solution is (4, 0)

5 0
3 years ago
Enter the sum of the numbers as the product of their GCF and another sum.
Tpy6a [65]

Answer:

8

Step-by-step explanation:

Explanation: The GCF of 56 and 64 is 8 , as 8 goes into 56 exactly 7 times and into 64 exactly 8 times. 8(8)+7(8)=8(7+8).

8 0
3 years ago
Agrupe os termos e fatore <br><br> xy+2x+5y+10
otez555 [7]
(y+2) (x+5) this your answer
5 0
3 years ago
Which expression is equivalent to 2 (a + 2 b) minus a minus 2 b?
algol [13]

Answer:

a+2b

Step-by-step explanation:

2(a+2b) -a-2b

2a+4b-a-2b

a+2b

8 0
3 years ago
Read 2 more answers
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