2. Разделите многочлен на множители:
a) x³ - 4x
b) 8a³ - 27b³
c) (x + y)³ - (x - y)³- 8y³
Помогите срочно!
a) x³ - 4x
b) 8a³ - 27b³
c) (x + y)³ - (x - y)³- 8y³
Помогите срочно!
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Answers & Comments
a) x³ - 4x =х*(х-2)(х+2)
b) 8a³ - 27b³=2³а³-3³b³=(2a-3b)*(4a²+6ab+9b²)
c) (x + y)³ - (x - y)³- 8y³=x³+3x²y+3xy²+y³-x³+3x²y-3xy²+y³-8y³=6x²y-6y³