a^6+ b^6= (a^2+ b^2) {( a^2+ b^2)2-3a^2b^2} proof

Er Chandra Bhushan
0

 prove that 

a6+ b6= (a2+ b2) {( a2+ b2)2-3a2b2}

LHS=  a6+ b6

 ( a2)^3+ (b2)^3

(a2+ b2) (a4 - a2b2+ b4) 

(a2+ b2) {( a2+ b2)2-  2a2b2- a2b2}

 (a2+ b2) {( a2+ b2)2-3a2b2} proved 






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