Question

Bài I.4 trang 15 SBT Toán 8 Tập 1

Answer 1

a) (2x5 − 5x3 + x2 + 3x − 1) : (x2 − 1)

b) (5x5 − 2x4 − 9x3 + 7x2 − 18x − 3) : (x2 − 3)

Lời giải:

a) (2x5 − 5x3 + x2 + 3x − 1) : (x2 − 1) = 2x3 − 3x + 1

b) (5x5 − 2x4 − 9x3 + 7x2 − 18x − 3) : (x2 – 3) = 5x3 − 2x2 + 6x + 1