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seropon [69]
2 years ago
6

Please me in math

a%20-%201%7D%5E%7B2%7D%20%7D%7Ba%20%2B%201%7D%20" id="TexFormula1" title=" \frac{a + 1}{a - 1} + \frac{ {a - 1}^{2} }{a + 1} " alt=" \frac{a + 1}{a - 1} + \frac{ {a - 1}^{2} }{a + 1} " align="absmiddle" class="latex-formula">
​
Mathematics
2 answers:
PIT_PIT [208]2 years ago
5 0

Step-by-step explanation:

hope this helps you thank you

dalvyx [7]2 years ago
5 0

\boxed{ \sf{Answer}}

\large{\sf\frac{a + 1}{a - 1}  +  \frac{ {a - 1}^{2} }{a + 1}}

Use the algebraic identities ⟶

  1. {\sf(a - b)(a + b) =  {a}^{2}  - b ^{2}}
  2. {\sf(a + b) {}^{2}  =  {a}^{2}  + 2ab -  {b}^{2}}
  3. {\sf(a - b) {}^{2}  =  {a}^{2}  - 2ab +  {b}^{2}}

Squaring on both the sides

{\sf\frac{(a + 1 {)}^{2}  + ( {a - 1)}^{2} }{(a - 1)(a + 1)}}

=\frac{ {a}^{2} + 2a + 1 +  {a}^{2} - 2a + 1  }{ {a}^{2} - 1 }  \\  =  \frac{ {a}^{2} +\bcancel 2a + 1 +  {a}^{2} - \bcancel2a + 1  }{ {a}^{2} - 1 } \\  =   \frac{ {a}^{2} +  {a}^{2} + 1 + 1  }{ {a}^{2}  - 1}

\large\boxed{\sf{⟹\frac{ {2a}^{2}  + 2}{ {a}^{2} - 1 }}}

ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ

꧁❣ ʀᴀɪɴʙᴏᴡˢᵃˡᵗ2²2² ࿐

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Find the value of k if (x-3) is a factor of P(x)=2x3-5x2+3x+k
blsea [12.9K]

Answer:

k = -18

Step-by-step explanation:

If x-3 is a factor, what this means is that if we substitute;

x = 3 into the equation, we should get 0

This is from the factor theorem

Thus ;

P(3) = 0 = 2(3)^3 -5(3)^2 + 3(3) + k

0 = 54 - 45 + 9 + k

k + 18 = 0

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4 0
3 years ago
Enter the value of the 8 in the following number. 438.13
d1i1m1o1n [39]

Answer:

8

Step-by-step explanation:

It is in the one's place, so it is just 8x1, which is 8

8 0
2 years ago
Find the slope of the graph of the relation y^3 − xy = −6 at the point (7, 2).
mezya [45]
Yay, implicit differnentiation

when you take the derivitive of y, you multiply it by dy/dx
example
dy/dx y^2=2y dy/dx

for x, the dy/dx dissapears

ok
so differnetiate and solve for dy/dx

3y² dy/dx-(y+x dy/dx)=0
expand
3y² dy/dx-y-x dy/dx=0
3y² dy/dx-x dy/dx=y
dy/dx (3y²-x)=y
dy/dx=y/(3y²-x)

so at (7,2)
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5 0
3 years ago
Don’t answer if you don’t know !!
DochEvi [55]

Answer:

72 sides

Step-by-step explanation:

The sum of the angles of a polygon with n sides is (n−2) × 180

Since the polygon is regular, we can divide by the number of sides to find the measure of each angle (n−2) × 180 / n

Each angle is equal to 175

(n−2) × 180 / n = 175

Multiply each side by n

(n-2)180 = 175n

Distribute

180n -360 = 175n

Subtract 180n from each side

180n-180n-360 = 175n-180n

-360 = -5n

Divide each side by -5

-360/-5 =-5n/-5

72 = n

There are 72 sides

3 0
2 years ago
Read 2 more answers
I need help with these problems, thanks
ira [324]

1.  C

2.  A

3. B

Hope This Helped!

<u><em>(Brainliest will be appreciated)</em></u>

4 0
2 years ago
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