a, 3x^2 (4x^2 - x + 1)
b, 6x^4 (3x^3 - 2x^2 +2 + 1)
c, (-2x) x 4x^3 -5x +2)
d, 8x nhân (x^4 - 2x^3 +x^2 - x +5)
Exercise
QandAs
Discussion
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