解下列不等式:(1)㎡-m-12≤0 (2)㎡+3m-4>0 (3)16-8m+㎡≤0

问题描述:

解下列不等式:(1)㎡-m-12≤0 (2)㎡+3m-4>0 (3)16-8m+㎡≤0

(1)(m+3)(m-4)≤0
-3≤m≤4
(2)(m-1)(m+4)≥0
m≤-4或m≥1
(3)(m-4)^2≤0
m=4