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Rus_ich [418]
2 years ago
8

Factor the following Polynomials 2x2 + 5x + 2

Mathematics
1 answer:
Leokris [45]2 years ago
3 0

Answer:

Step-by-step explanation:

Find the multiples of 2x^2 and 2

for 2x^ you get 2,1 but they need to have x  to get x^2 so; (2x and x)=2x^2

for 2 you get 2,1 (2x1)=2

Because your equation has a 5x and no negatives you know that your factors need to be positive.

(2x+1)(x+2)

when you multiply these you get

2x^2+4x+x+2 (remember 2x multiplies with everything inside (x+2) = 2x^2+4) and so on for the x (x+2) =x+2 )

Then you combine like terms 4x+x=5x

and those are the only like terms available and you get

2x^2+5x+2

Hope it helped

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X-y = -10 2x+4y=22 substitution
Tema [17]

Answer:

[1]    x - 4y = 22

  [2]    2x + 5y = -21

Step-by-step explanation:

Solve equation [1] for the variable  x  

 

 [1]    x = 4y + 22

// Plug this in for variable  x  in equation [2]

  [2]    2•(4y+22) + 5y = -21

  [2]    13y = -65

// Solve equation [2] for the variable  y  

  [2]    13y = - 65  

  [2]    y = - 5  

// By now we know this much :

   x = 4y+22

   y = -5

// Use the  y  value to solve for  x  

   x = 4(-5)+22 = 2

I am sorry if I get it wrong.

4 0
3 years ago
–4.36 − 1.6g + 7.4 = 0.3g + 6.46
Art [367]

Answer:

g = 10.82

_______ or 5.694736842105263

-1.9

Step-by-step explanation:

- 1.6g - 0.3g = 6.46 + 4.36

-1.9g = 10.82

g = 10.82

_____

-1.9

5 0
3 years ago
Cos(x/5)sin(x/5)=1/2[sin(2x/5) true or false
lukranit [14]
Sin2x=2sinxcosx
sin2x/5=2sinx/5cosx/5
hence the nuber 2 multiply by cosx/5sinx/5 can be divided on the other side
hence its true
6 0
3 years ago
Which fraction is equivalent to -7/8<br><br> 1. 8/-7<br><br> 2. -7/-8<br><br> 3. 8/7<br><br> 4. 7/-8
IceJOKER [234]

Answer:

Your answer is answer no 4 = 7/-8

7 0
3 years ago
Read 2 more answers
18. During a sale, cameras were discounted 30% from their original price of $295.99. How much was each camera during the sale to
attashe74 [19]

Answer:

207.19 is the cost on sale

Step-by-step explanation:

If there is a discount of 30%, we still have to pay 100-30 = 70%

295.99 * 70%

295.99 * .70

207.193

Rounding to the nearest cent

207.19 is the cost on sale

6 0
3 years ago
Read 2 more answers
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