Question

What is the product of -2x^3 + x - 5 and x^3 - 3x - 4? Are the products equal to those of x^3 - 3x - 4 and -2x^3 + x - 5? Explain

I am soooo lost on working this out.

Answer 1

Explanation:

( -2x³ + x - 5) × ( x3 - 3x - 4)

= ( -2x³)×( x3 - 3x - 4) +(x)×( x3 - 3x - 4) - (5)( x3 - 3x - 4)

= - 2x^6 +6x^4 +8x³ + x^4 - 3x² -4x - 5x³ +15x + 20

= - 2x^6 +7x^4 +3x³-3x²+11x +20