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IrinaVladis [17]
3 years ago
14

(x + 2)(x2 + 5x + + 1)

Mathematics
1 answer:
butalik [34]3 years ago
6 0

Answer:

{x}^{3}   + 7 {x}^{2}  + 11x + 2

hope it's helpful ❤❤❤❤❤❤

THANK YOU.

#

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Solve the following system of equations for all three variables.
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Answer:

Step-by-step explanation:

-2x + 3y – 4z = 8    ----------------(I)

5x – 3y + 5z = -8    -----------------(II)

7x – 3y + 3z = 8 ------------------(III)

Add equation (I) & (II) and thus y will be eliminated

(I)        -2x + 3y – 4z = 8

(II)        <u>5x – 3y + 5z = -8</u>    {Add}

           3x          + z  = 0   ------------------------(A)

Multiply equation (II) by (-1) and then add with equation (III). Thus y will be eliminated.

(II) * (-1)         -5x + 3y - 5z = +8

                     <u>7x – 3y + 3z = 8</u>   {Add}

                     2x         -2z   = 16   ---------------(B)

Multiply equation (A) by 2 and then add. Thus z will be eliminated and we will get the value of x

(A) * 2          6x + 2z = 0

(B)                 <u>2x - 2z  = 16</u>   {Add}

                     8x         = 16

Divide both sides by 8

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                          x = 2

Plugin x = 2 in equation (A)

3x + z = 0

3*2 + z = 0

 6 + z = 0

       z = -6

Plug in x = 2 and z  = - 6 in equation (I)

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-2*2 + 3y - 4*(-6) = 8

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               3y = -12

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y = -4

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<u> </u>

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