Q10(ii) Without expanding ,prove that
a a2 bc b b2 ca c c2 ab
= 1 a2 a3 1 b2 b3 1 c2 c3
Solution
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| a | a2 | bc |
| b | b2 | ca |
| c | c2 | ab |
| 1 | a2 | a3 |
| 1 | b2 | b3 |
| 1 | c2 | c3 |