BT1) a. x^2y^2z: xyz b. x^3y^4: x^3y BT2) a. 18x^2y^2z: 6xyz b. 5a^3b: (- 2a^2b) c. 27x^4y^2z: 9x^4y

1 bình luận về “BT1) a. x^2y^2z: xyz b. x^3y^4: x^3y BT2) a. 18x^2y^2z: 6xyz b. 5a^3b: (- 2a^2b) c. 27x^4y^2z: 9x^4y”

1. 1.

   a) x^2y^2z : xyz

   = (x^2:x).(y^2:y).(z:z)

   = xy

   b) x^3y^4 : x^3y

   = (x^3:x^3(y^4:y)

   = y^3

   2.

   a. 18x^2y^2x : 6xyz

   = (18:6).(x^2:x)(y^2:y).(z:z)

   = 3xy

   b) 5a^3b : (-2a^2b)

   = (-5:2).(a^3:a^2).(b:b)

   = -5/2a

   c) 27x^4y^2z: 9x^4y

   = (27:9)(x^4:x^4)(y^2:y).z

   = 3yz

    

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