(|x^2|)/4 =1

解答

\frac{x ^{2}}{4} = 1

x = - 2 or x = 2

求解步骤

\frac{x ^{2}}{4} = 1

在两边乘以

4

x^{2} = 4

使用绝对值运算法则: 若

∣ u ∣ = a, a > 0

，则

u = a

u = - a

x^{2} = - 4 or x^{2} = 4

x^{2} = - 4 or x^{2} = 4

无解 or (x = - 2 or x = 2)

x = - 2 or x = 2