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jeka57 [31]
3 years ago
15

Solve x 3(x+1)=-2(x-1)-4

Mathematics
2 answers:
Leto [7]3 years ago
4 0

Answer:

x3(x+1)= –2(x-1)–4

3x^2+3x=–2x+2-4

3x^2+3x+2x=2-4

3x^2+5x=–2

3x^2+5x+2=0

3x^2+3x+2x+2=0

3x(x+1)2(x+1)=0

(3x+2)(x+1)=0

3x+2=0 or x+1=0

3x=–2 or x=–1

x=–2/3 or –1

Step-by-step explanation:

–remove brackets by multiplication

–form a quadratic equation

–and then solve either by means of quadratic formula or factorisation method

Nataly [62]3 years ago
3 0

Answer:

x= -1/3 or -2

Step-by-step explanation:

3x^2 +3x= -2x +2-4

3x^2 + 5x +2=0

by factorization method

3x(x+2) 1(x+2)=0

(3x+1)(x+2)

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Fofino [41]

Answer

8.6

Step-by-step explanation:

5 0
3 years ago
The sum of twice a number and 13 is 75 <br> • <br> but in an algebraic equation<br> DONT SOLVE
Alchen [17]

Answer:

I won't solve it, because you asked me to.

Step-by-step explanation:

The first question we should ask ourselves is "what are we looking to solve?"

We are looking for some sort of value that satisfies that equation. We'll call it x

Reading from left to right:

The sum of twice a number and 13 is 75

         +            2              x              13 = 75

2x + 13 = 75

5 0
2 years ago
TIMED TEST PLEASE HELP
xxMikexx [17]
1 ) first offer
total payments
375.76×12×4
=18,036.48
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18,036.48−16,000
=2,036.48
Second offer
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=18,749.28
Interest paid
18,749.28−16,000
=2,749.28
Larry will save of taking 6% loan
2,749.28−2,036.48=712.8. .answer

2) credit card 1
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277.09×12
=3,325.08
Interest paid
3,325.08−3,000
=325.08
Credit card 2
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152.69×12×2
=3,664.56
Interest paid
3,664.56−3,000
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Hope it helps!
6 0
3 years ago
Read 2 more answers
When solving a system of equations, how do you determine which method to use?
bazaltina [42]
Substitution is best to use one one or both equations is already solved for one of the variables. Elimitation can be use if all variables have a coefficient other than 1.
5 0
2 years ago
For a field trip 11 students rode in cars and the rest filled eight buses. Which equation below will help you find how many stud
Helen [10]

Answer:

8x + 11= 315

Step-by-step explanation:

Let x = the number of students in a bus

There are 8 buses

8x is the number of students in buses

There are 11 students in cars

Add this together to get all the students, which is 315

8x + 11= 315

6 0
3 years ago
Read 2 more answers
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