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受欢迎的代数 >

8m^3-104m^2+336m=0

解答

8 m^{3} - 104 m^{2} + 336 m = 0

解答

m = 0, m = 6, m = 7

求解步骤

8 m^{3} - 104 m^{2} + 336 m = 0

因式分解

8 m^{3} - 104 m^{2} + 336 m : 8 m (m - 6) (m - 7)

8 m (m - 6) (m - 7) = 0

使用零因数法则： If

ab = 0

then

a = 0

or

b = 0

m = 0 or m - 6 = 0 or m - 7 = 0

解

m - 6 = 0 : m = 6

解

m - 7 = 0 : m = 7

解为

m = 0, m = 6, m = 7

作图

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