|x-4|=26

解答

∣ x - 4 ∣ = 26

x = - 22 or x = 30

求解步骤

∣ x - 4 ∣ = 26

使用绝对值运算法则: 若

∣ u ∣ = a, a > 0

，则

u = a

u = - a

x - 4 = - 26 or x - 4 = 26

x - 4 = - 26 or x - 4 = 26

x = - 22 or x = 30

lo g_{3} (81) = 3 x + 7

i + (3 + 4 i) = z

s im pl i f y \frac{a}{\frac{b}{\frac{c}{d}}}

s im pl i f y (64 y^{100})^{\frac{1}{2}}

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