Question

multiply the term = -2x^2, x^5z^2, -7/2 zx​

Answer 1

Answer:

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Step-by-step explanation:

Equations Simplified or Rearranged :

[1] x - y - z = 18/5

[2] -x + y - z = -8

[3] -x - y + z = -8/3

// To remove fractions, multiply equations by their respective LCD

Multiply equation [1] by 5

Multiply equation [3] by 3

// Equations now take the shape:

[1] 5x - 5y - 5z = 18

[2] -x + y - z = -8

[3] -3x - 3y + 3z = -8

Solve by Substitution :

// Solve equation [2] for the variable y

[2] y = x + z - 8

// Plug this in for variable y in equation [1]

[1] 5x - 5•(x +z -8) - 5z = 18

[1] - 10z = -22

// Plug this in for variable y in equation [3]

[3] -3x - 3•(x +z -8) + 3z = -8

[3] -6x = -32

// Solve equation [1] for the variable z

[1] 10z = 22

[1] z = 11/5

// Solve equation [3] for the variable x

[3] 6x = 32

[3] x = 16/3

// By now we know this much :

x = 16/3

y = x+z-8

z = 11/5

// Use the x and z values to solve for y

y = (16/3)+(11/5)-8 = -7/15

Solution :

{x,y,z} = {16/3,-7/15,11/5}

Answer 2

-2x X x^5Z^2 X -7/2zx

-2×-7/2x^2+5+1 X z^2+1

Ans: 7x^8 z^3