Question

please help me

please explain it

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Answer 1

Answer:

Theory : A sum of two perfect cubes,  a3 + b3 can be factored into  :

             (a+b) • (a2-ab+b2)

Proof  : (a+b) • (a2-ab+b2) = 

    a3-a2b+ab2+ba2-b2a+b3 =

    a3+(a2b-ba2)+(ab2-b2a)+b3=

    a3+0+0+b3=

    a3+b3

Check :  729  is the cube of   9 

Check :  x6 is the cube of   x2

Factorization is :

             (x2 + 9)  •  (x4 - 9x2 + 81) 

Answer 2

Answer:

l guess it is like x=3

Step-by-step explanation:

x6-729=0

x6=729

x6=3 to the power of 6

since powers are same equate bases

thus, x=3