kaytown06
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PLEASEEE HELP
What's the product of -2x^3+x-5 and x^3-3x-4?
a) Show your work.
b) Is the product of -2x^3+x-5 and x^3-3x-4 equal to the product of x^3-3x-4 and -2x^3+x-5

Respuesta :

a)   ( -2x^3 + x - 5)(x^3 - 3x - 4)

= -2x^6 + 6x^4 + 8x^3 + x^4 - 3x^2 - 4x - 5x^3 + 15x + 20

= -2x^6 + 7x^4 + 3x^3 - 3x^2 + 11x + 20   Answer

b)   Yes.  Because multiplication of polynomials is commutative.

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