Question

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Answer 1

Respuesta:

1. 3x (1 + x^2) = 3x + 3x^3

2. x^3 ( 2x - 5) = 2x^4 - 5x^3

3. xyz (2xy + 7xz - 9x^3 yz^2) = 2x^2y^2z + 7x^2yz^2 - 9x^2y^2z^3

4. - 6x^2 y^3 z (2xyz^6 - 9xy^5z + 5xyz) = - 12x^3y^4z^2 + 54x^3y^8z^2 - 30x^3y^4z^2