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受欢迎的代数 >

|x^2-6x|=9

解答

x^{2} - 6 x = 9

解答

x = 3 (1 - 2) or x = 3 or x = 3 (1 + 2)

+1

十进制

x = - 1.24264 \dots, x = 3, x = 7.24264 \dots

求解步骤

x^{2} - 6 x = 9

使用绝对值运算法则: 若

∣ u ∣ = a, a > 0

，则

u = a

or

u = - a

x^{2} - 6 x = - 9 or x^{2} - 6 x = 9

x^{2} - 6 x = - 9 or x^{2} - 6 x = 9

x = 3 or (x = 3 (1 - 2) or x = 3 (1 + 2))

x = 3 (1 - 2) or x = 3 or x = 3 (1 + 2)

作图

流行的例子

∣ 4 x - 6 ∣ \leq 14

4 x - 12 > 6

-0.2(x+4)-0.1x=-2.6

- 0.2 (x + 4) - 0.1 x = - 2.6

化简 (16r^3t^{-5})/(4r^{-1)t^2}

s im pl i f y \frac{16 r ^{3} t ^{- 5}}{4 r ^{- 1} t ^{2}}

6 x + 2 x^{2} = 0