分解因式(1)2t^3+1⼀4 (2)a^4-6a^2-27 约分:10a^3*b*c⼀5a^2*b^3*c^2

2024-12-23 03:43:47
推荐回答(3个)
回答1:

1)2t^3+1/4
=2(t³+1/8)
=2(t+1/2)(t²-t/2+1/4)

(2)a^4-6a^2-27
=(a²-9)(a²+3)
=(a+3)(a-3)(a²+3)

约分:10a^3*b*c/5a^2*b^3*c^2
=2a/b²c²

回答2:

(1)2(t+1/2)(t^2+t/2+1/4)
(2)(a^2+3)(a+3)(a-3)
2a/b^2*c

回答3:

(1)2(t+1/2)(t^2-1/2t+1/4)
(2)(a^2+3)(a+3)(a-3)
(3)2a/(b^2c)