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Ilia_Sergeevich [38]
3 years ago
6

Solve 3x2 + 4x = −5.

Mathematics
2 answers:
erastova [34]3 years ago
3 0

Answer:


Step-by-step exExplanation:

Solve:

3

x

2

−

4

x

−

5

=

0

is a quadratic equation in standard form:

a

x

2

+

b

x

+

c

,

where:

a

=

3

,  

b

=

−

4

,  

c

=

−

5

Quadratic formula

x

=

−

b

±

√

b

2

−

4

a

c

2

a

Plug in the known values.

x

=

−

(

−

4

)

±

√

(

−

4

)

2

−

4

⋅

3

⋅

−

5

2

⋅

3

Simplify.

x

=

4

±

√

76

6

Prime factorize  

76

.

x

=

4

±

√

2

2

×

19

6

Apply rule:  

√

a

2

=

a

x

=

4

±

2

√

19

6

Simplify.

x

=

2

±

√

19

3

Solutions for  

x

.

x

=

2

+

√

19

3

,

 

2

−

√

19

3

Related questions

How do you know how many solutions  

2

x

2

+

5

x

−

7

=

0

has?

What is the Quadratic Formula?

planation:


baherus [9]3 years ago
3 0

Answer:

x= -11/4

Step-by-step explanation:


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3 0
3 years ago
Answer ASAP I needs this like asap
jonny [76]

Answer:

1. 84 in

2. 300 ft

3. 2500 cm

4. 5000 m

5. 6 lbs

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7. 3520.0131234 yd

8. 4.375 c

9. 1.5 L

10. 6000 mg

11. 48

12. 80000 lbs

13. 1.5 m

14. 1500 mm

15. Dan's phone is 157 millimeters long. How many inches is this? 5

Step-by-step explanation:

3 0
3 years ago
3x+4/7-5x-4/7=3/7<br> A- (2)<br> B (-2)<br> C (4/3)<br> D (-4/7)
oksano4ka [1.4K]
That  one is realy hard
5 0
3 years ago
What value of x is in the solution set of 2(3x – 1) ≥ 4x – 6?
shtirl [24]
<span>The answer is x ≥ -2. First use distributive property to simplify the left side of inequality: 2(3x – 1) ≥ 4x – 6. 2 * 3x - 2 * 1 ≥ 4x - 6. 6x - 2 ≥ 4x - 6. Rearrange it to get x on the one side and integers on the other side of inequality: 6x - 4x ≥ 2 - 6. Solve for x: 2x ≥ -4. x ≥ -4/2. x ≥ -2.Hope this helps. Let me know if you need additional help!</span>
3 0
3 years ago
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