-|2(x+5)(x-5)|-3=53

解答

- ∣ 2 (x + 5) (x - 5) ∣ - 3 = 53

x \in R 无解

求解步骤

- ∣ 2 (x + 5) (x - 5) ∣ - 3 = 53

将

3

到右边

- ∣ 2 (x + 5) (x - 5) ∣ = 56

两边除以

- 1

∣ 2 (x + 5) (x - 5) ∣ = - 56

绝对值不能小于 0

x \in R 无解

- 9 = - 8 ∣ - s - 1000 ∣ - 9

so l v e f or t, ∣ 1 - 4 t ∣ = 5

- ∣ 10 + x ∣ + 10 = - ∣

- 59 = ∣ u ∣ - 8

∣ 9 x - 17 ∣ + 5 = 4