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2014-07-16T21:42:05+07:00
A + B = -b/a
a + 2a - 2 = -7/2
3a - 2 = -7/2
6a - 4 = -7
6a = -3
a = -1/2

b = 2(-1/2)-2 = -3

A . B = c/a
-1/2 . -3 = m/2
3/2 = m /2
3 = m

sehingga,m= 3
2 3 2