Toán Lớp 8: 1. Rút gọn biểu thức:
a) (x+2) (x2- 2x + 4) – (x3- 2)
b) (x+5)2 – 4x ( 2x+3)2 – ( 2x-1) (x+3) (x-3)
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Toán Lớp 8: 1. Rút gọn biểu thức:
a) (x+2) (x2- 2x + 4) – (x3- 2)
b) (x+5)2 – 4x ( 2x+3)2 – ( 2x-1) (x+3) (x-3)
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