Question

(x³+2x-1)² * (3x²-2)

prosze pilnie;)

Answer 1

(x³+2x-1)² * (3x²-2)=(x⁶+4x⁴-2x³+4x²-4x+1)* (3x²-2)=
=3x⁸+12x⁶-6x⁵+12x⁴-12x³+3x²-2x⁶-8x⁴+4x³-8x²-2=
=3x⁸+10x⁶-6x⁵+4x⁴-8x³-5x²-2

Answer 2

(x³+ 2x-1)² * (3x² -2) = (x³+ 2x-1)(x³+ 2x-1) * (3x² -2) = (x⁶ +2x⁴ - x³ + 2x⁴ + 4x² - 2x -x³ - 2x +1) * (3x² -2) = (x⁶ + 4x⁴ - 2x³+ 4x² - 4x -1) * (3x² -2) = 3x⁸ + 12x⁶ - 6x⁵ + 12x⁴ - 12x³ - 3x² - 2x⁶ - 8x⁴ + 4x³ - 8x² + 8x + 1 = 3x⁸ + 10x⁶- 6x⁵ + 4x⁴ - 8x³ - 10x² + 8x +1