數學(Help)3

2007-10-07 3:08 am

X=2abc÷a+b+c

若:a=1、b=-3、c=-5
求X

更新1:

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回答 (5)

2007-10-07 3:15 am

✔ 最佳答案

只是代數而已
X = 2(1)(-3)(-5) ÷ 1 +(-3)+(-5)
X = 30 - 3 - 5
X = 22

參考: 自己

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2007-10-07 3:20 am

X=2x1x(-3)x(-5)÷1+(-3)+(-5)
X=2x(-3)x(-5)÷1+(-3)+(-5)
X=-6x(-5)÷1+(-3)+(-5)
X=30÷1+(-3)+(-5)
X=30+(-3)+(-5)
X=27+(-5)
X=22

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2007-10-07 3:20 am

X
=2abc÷a+b+c
=2*(1)*(-3)*(-5)÷(1)+(-3)+(-5)
=2*(1)*(3)*(5)÷(1)-(3)-(5)
=30÷1-8
=30-8
=22

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2007-10-07 3:16 am

X=2abc÷a+b+c
X=2*(1)*(-3)*(-5)÷(1)+(-3)+(-5)
X=2*(1)*(3)*(5)÷(1)-(3)-(5)
X=30÷1-8
X=30-8
X=22

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2007-10-07 3:12 am

X=30÷1-3-5
=22

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