Algebraic Manipulation
回答 (3)
2007-03-08 12:36 am
2007-11-09 10:57 am
no answer shows
2007-03-08 12:38 am
Why
((m(m+1))/2) + ((2(m+1))/2) = ((m+2)(m+1))/2 ?
this is because there is common factor,m + 1
for example,
ab + bc
= b(a + c)
e(a + s)(o + n) + m(e + n)(s + a)
= (a + s)[e(o + n) + m(e + n)]
((m(m+1))/2) + ((2(m+1))/2) = ((m+2)(m+1))/2 ?
this is because there is common factor,m + 1
for example,
ab + bc
= b(a + c)
e(a + s)(o + n) + m(e + n)(s + a)
= (a + s)[e(o + n) + m(e + n)]
參考: eason mensa eason mensa
收錄日期: 2021-04-23 00:11:30
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