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Ganezh [65]
3 years ago
9

Classify the system and identify the number of solutions. X-2y-2z=8 2x+6y-2z=9 8x-6y-14z=11

Mathematics
1 answer:
seropon [69]3 years ago
8 0

Answer:

xyz=-3.11

Step-by-step explanation:

X+2x+8X-2y+6y-6y-2z-2z-14z=8+9+11

11x-8y+6y-18z=28

11x-2y-18z=28

xyz(11-2-18)=28

xyz(11-20)=28

xyz(-9)=28

xyz=28/-9

xyz=-3.11

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<img src="https://tex.z-dn.net/?f=%28a%29%20%7B%20-%20%28b%29%7D%5E%7B2%7D%20" id="TexFormula1" title="(a) { - (b)}^{2} " alt="(
Cloud [144]

Answer:

 a - b2

Step-by-step explanation:

STEP  1 :

Trying to factor as a Difference of Squares:

1.1      Factoring:  a-b2  

Theory : A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =

        A2 - AB + BA - B2 =

        A2 - AB + AB - B2 =

        A2 - B2

Note :  AB = BA is the commutative property of multiplication.

Note :  - AB + AB equals zero and is therefore eliminated from the expression.

Check :  a1   is not a square !!

Ruling : Binomial can not be factored as the difference of two perfect squares

Final result :

 a - b2

<u><em>HOPE THIS HELPS!</em></u>

<u><em>PLEASE MARK BRAINLIEST! :)</em></u>

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Answer:

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