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Nesterboy [21]
3 years ago
6

Factorise :a³-1/a³-2a+2/a​

Mathematics
1 answer:
sattari [20]3 years ago
5 0

Answer:

Step-by-step explanation:

       

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Given the functions f(x) = 2x -1 and g(x) =
Novosadov [1.4K]

Answer:

Please check the explanation.

Step-by-step explanation:

Given

  • f(x) = 2x - 1
  • g(x) =  2 - x

a)

f(x) + g(x) = (2x - 1) + (2 - x)

                = 2x -1 + 2 - x

                = x + 1

b)

f(x) - g(x) = (2x - 1) - (2 - x)

              = 2x - 1 - 2 + x

               = 3x - 3

c)

g(-5) - f(-5)

Putting x = -5 in g(x) = 2 - x

g(x) = 2 - x

g(-5) = 2 - (-5) = 2+5 = 7

Putting x = -5 in f(x) = 2x - 1

f(x) = 2x - 1

f(-5) = 2(-5) - 1

       = -10 - 1

        = -11

Thus,

g(-5) - f(-5) = 7 - (-11) = 7+11 = 18

d)

f(x).g(x) = (2x - 1) (2 - x) = -2x² + 5x - 2

e)

f(g(x)) = f(2-x)

          = 2(2-x)-1

          = 4-2x-1

          = 3-2x

6 0
3 years ago
X2 + 4x - 21 = 0 quadratic formula
Elena-2011 [213]

Answer:

0

Step-by-step explanation:

x2 +4x-21=0. solve for x

x =  \frac{7}{2}

x = 3 \frac{1}{2}  \ x = 3.5

6 0
3 years ago
Round to the nearest ten and hundred 829
Musya8 [376]
To the nearest ten, 829 would become <em><u>830</u></em> because the ones digit (9) is closer to 30 than it is to 20. So we would round up.

To round to the nearest hundred, we look at the tens and ones digit. 29 is less than 50 so we would have to round down to <em><u>800</u></em> instead of rounding up to 900.

Hope that helps :)
4 0
3 years ago
Read 2 more answers
Vicki works 19 hours per week. her take home pay is $17.30 per hour. if vicki is able to save all of her earnings, how long will
Harlamova29_29 [7]
If Vicki works 19 hours per week att $17.30 per hour, then her weekly savings is (17.30)(19) = $328.70 So, if she needs to save at least 4 000, then she it will take her (4000/328.70) which is approximately 12.17 weeks. That means she has to save for at least 13<span> weeks. </span>
6 0
3 years ago
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What is the distance between (8, -3) and (4, -7)
Delicious77 [7]

Answer:

(8,-3) is 11 and (4,-7) is 11

Step-by-step explanation:

for both all you have to do is subtract

EX. 8-(-3) = 11

8 0
3 years ago
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