Question

15x-[8x³+3x²-{8x²-(4-2x-x³)-5x³}-2x]

Answer 1

Answer:

[15x3+5x2−{8x2−(4−2x−x3)−5x3}−2x]

[15x3+5x2−{8x2−4+2x+x3−5x3}−2x]

[15x3+5x2−{8x2−4+2x−4x3}−2x]

[15x3+5x2−8x2+4−2x+4x3−2x]

[19x3−3x2+4−4x]

(−19x3+3x2−4+4x)