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ollegr [7]
4 years ago
13

Please show me step by step: x^3+2x^2-5x-6=0

Mathematics
1 answer:
Kazeer [188]4 years ago
3 0

Answer:

x=-1, x=2, x=3

Step-by-step explanation:

Factor the left side of the equation.

(x+1)(x^2+x-6)

(x+1)(x-2)(x-3)

Now set everything equal to 0

x+1=0

x-2=0

x-3=0

Now solve for x

therefore, the answer is x=-1, x=2, x=3

You might be interested in
A scuba diver is 30 feet below the surface of the water 10 seconds after he entered the water and 100 feet below the surface aft
den301095 [7]

Answer:

2.3 feet/ second

Step-by-step explanation:

To find the rate of change, we will have to find the difference in his distance travelled and divide it by the time taken to move that distance.

This is given by rate of change = (change in position)/ change in time

From the question, his position changed from 30 ft to 100 ft thus the distance he travelled is = 100ft - 30 ft = 70 ft.

Time taken to travel this distance = 40 seconds - 10 seconds = 30 seconds

Diver's rate of travel = 70 ft / 30 seconds = 2.33333ft/second.

Rounding off the answer to the nearest tenth, we have 2.3 ft/second

5 0
3 years ago
How do you solve this equation? x/2 - x = x/4 + 6
fenix001 [56]

Answer:

x= - 8

Step-by-step explanation:

multiply both sides by 4 to get rid of the fractions. you should then get:

2x-4x=x+24

then get all the x terms to one side by subtracting by x on each side:

2x-4x-x=24

then simplify:

-3x=24

divide by -3 on each side:

x= - 8

4 0
3 years ago
4 pounds covers434 sq ft how many pounds needed for 6944 square feet
Ivenika [448]

Answer:

You would need 64 pounds.

STEP BY STEP EXPLANATION:

4 pounds covers 434 sq ft

434 goes into 6944, 16 times

16 x 4  = 64

I hope this helps :)

Have a nice day!

6 0
3 years ago
261,256,251 find the 50th term
marshall27 [118]

Answer:

a_{50}=16

Step-by-step explanation:

Given that,

An airthmetic sequence,

261,256,251

We need to find the 50th term.

We have,

first term, a = 261

common difference = 256-261 = -5

The nth term of the AP is given by :

a_n=a+(n-1)d\\\\a_{50}=a+49d\\\\a_{50}=261+49(-5)\\\\a_{50}=16

So, the 50th term of the sequence is 16.

7 0
3 years ago
Here is an addition sentence (14 + 13) + 2 = 29 Choose an equivalent addition sentence that shows the associative property of ad
krok68 [10]
14 + (13 + 2) = 29 is the correct answer
5 0
3 years ago
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