標題:
maths
發問:
maths 問題: 1.c=5(a-1)(b-1)/2 c=? 2.e=10(a+b)-2(c-d) e=? 3.f=e(45-d)(c-10) f=? 4.g=9f/9000)(f/9000)-(e-3d+c-3b-3a) g=?
最佳解答:
1. c=5(a-1)(b-1)/2 c= 2.5(ab-a-b+1) = 2.5ab-2.5a-2.5b+2.5 ,, 2. e=10(a+b)-2(c-d) =10a+10b-2c+2d ,, 3.f=e(45-d)(c-10) =e(45c-450-cd+10d) =45ce-450e-cde+10de ,, 4.g=(9f/9000)(f/9000)-(e-3d+c-3b-3a) =9f^2/81000-e+3d-c+3b+3a =f^2/9000-e+3d-c+3b+3a
maths
發問:
maths 問題: 1.c=5(a-1)(b-1)/2 c=? 2.e=10(a+b)-2(c-d) e=? 3.f=e(45-d)(c-10) f=? 4.g=9f/9000)(f/9000)-(e-3d+c-3b-3a) g=?
最佳解答:
1. c=5(a-1)(b-1)/2 c= 2.5(ab-a-b+1) = 2.5ab-2.5a-2.5b+2.5 ,, 2. e=10(a+b)-2(c-d) =10a+10b-2c+2d ,, 3.f=e(45-d)(c-10) =e(45c-450-cd+10d) =45ce-450e-cde+10de ,, 4.g=(9f/9000)(f/9000)-(e-3d+c-3b-3a) =9f^2/81000-e+3d-c+3b+3a =f^2/9000-e+3d-c+3b+3a
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