解方程10點

2009-10-05 7:17 am
(4m+1)2次方 - 4(2)(-1+2m2次方)=0


2次方唔識打- -

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回答 (3)

2009-10-05 7:35 am
✔ 最佳答案
(4m+1)2 - 4(2)(-1+2m2)=0
(16m2+8m+1)-8(-1+2m2)=0
16m2+8m+1+8-16m2=0
8m+9=0
8m=-9
m=-9/8
2009-10-05 7:29 am
(4m+1)2次方 - 4(2)(-1+2m2次方)=0

A. (4m+1)^2-4(2)(-1+2m^2) = 0
(4m+1)(4m+1)-8(-1+2m^2) = 0
(16m^2+8m+1)+8-16m^2 = 0
8m+9 = 0
8m = -9
m = -9/8
參考: Myself
2009-10-05 7:29 am
(16)2次方+8m+1+8-16m2次方=0
                 8m+9=0
                   8m=-9
                    m=-9/8
Hope this can help you~=)


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