1 3 4 2 de' + bd' + ea + ca' ¶ bc_{0} + c_{1} i.e. ¶ c_{1}b_{0} -- = =- = 1 2 3 4 14. c_{1}b'_{0} + a_{1}e'_{0} + d_{1}b_{0} + a'_{1}c'_{0}; 1 3 4 2 cb' + db + a'c' + ae' ¶ de'_{0} + d_{1} i.e. ¶ d_{1}e'_{0} -- = - = = 1 2 3 4 15. b'd_{0} + e_{1}c'_{0} + b_{1}a'_{0} + d'_{1}c_{0}; 1 3 4 2 b'd + ba' + d'c + ec' ¶ a'e_{0} + e_{1} i.e. ¶ e_{1}a'_{0} - - = = - = 1 2 3 4 16. a'e_{0} + d_{1}c_{0} + a_{1}b'_{0} + e'_{1}d'_{0}; 1 3 4 2 a'e + ab' + e'd' + dc ¶ b'c_{0} - - = = - = 1 2 3 4 17. d_{1}c'_{0} + a_{1}e'_{0} + bd'_{0} + c_{1}e_{0}; 1 3 4 2 dc' + bd' + ce + ae' ¶ ba_{0} + a_{1} i.e. ¶ a_{1}b_{0} -- = =- = 1 2 3 4 18. a_{1}b'_{0} + d_{1}e'_{0} + a'_{1}c_{0} + be_{0}; 1 3 4 2 ab' + a'c + be + de' ¶ cd_{0} + d_{1} i.e. ¶ d_{1}c_{0} -- = =- = 1 2 3 4 5 19. bc_{0} + e_{1}h'_{0} + a_{1}b'_{0} + dh_{0} + e'_{1}c'_{0}; 1 3 5 2 4 bc + ab' + e'c' + eh' + dh ¶ ad_{0} + a_{1} -- = - = =- = i.e. ¶ a_{1}d_{0} 1 2 3 4 5 20. dh'_{0} + ce_{0} + h_{1}b'_{0} + ad'_{0} + be'_{0}; 1 3 4 5 2 dh' + hb' + ad' + be' + ce ¶ ac_{0} -- =- = =- = 1 2 3 4 5 21. b_{1}a'_{0} + dh_{0} + ce_{0} + ah'_{0} + c'_{1}b'_{0}; 1 4 2 5 3 ba' + ah' + dh + c'b' + ce ¶ de_{0} -- =- = - = = 1 2 3 4 5 22. e_{1}d_{0} + b'h'_{0} + c'_{1}d'_{0} + a_{1}e'_{0} + ch_{0}; 1 3 4 5 2 ed + c'd' + ae' + ch + b'h' ¶ ab'_{0} + a_{1} -- - = = =- = i.e. ¶ a_{1}b_{0} pg157 1 2 3 4 5 23. b'_{1}a_{0} + de'_{0} + h_{1}b_{0} + ce_{0} + d'_{1}a'_{0}; 1 3 5 2 4 b'a + hb + d'a' + de' + ce - - = - = =- = ¶ hc_{0} + h_{1} i.e. ¶ h_{1}c_{0} 1 2 3 4 5 6 24. h'_{1}k_{0} + b'a_{0} + c_{1}d'_{0} + e_{1}h_{0} + dk'_{0} + bc'_{0}; 1 4 5 3 6 2 h'k + eh + dk' + cd' + bc' + b'a ¶ ea_{0} + e_{1} - - = -= -= -= = i.e. ¶ e_{1}a_{0} 1 2 3 4 25. a_{1}d'_{0} + k_{1}b'_{0} + e_{1}h'_{0} + a'b_{0} 5 6 + d_{1}c'_{0} + h_{1}k'_{0};