F.5 的路過~
我睇唔明你想寫咩 1999 又冇括號 又唔空白鍵
希望冇get錯
Q1 x/3 +8 = x+2
x+24 = 3x+6
18 = 2x
x = 9
Q2 1/5x - 1/6x = 4
6 -5 = 120x
1 = 120x
x = 1/120
Q3 (5x-2)/2 = (2x+3) /3
3(5x-2) = 2(2x+3)
15x-6 = 4x+6
11x = 12
x = 12/11
Q4 5+(-x)? = 4(x-3) - 2(x-1)
5-x = 4x-12 -(2x-2)
5-x = 4x-12-2x+2
5-x = 2x-10
15 = 3x
x = 5
令亂入一條3個代數的易數進行騎劫
L1 : ax^2+bx+1 = 0 根之和 = 8/7 根之積 = 1/7
找 a , b , x
a = 7 , b = -8 , x = 1/7 or 1 (Ctrl + A)
[ 本帖最後由 jamzjam 於 2011-8-8 16:07 編輯 ]
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