Factorization

2011-02-06 6:21 pm
Factorize a^4 + a^2b^2 + b^4.

回答 (1)

2011-02-06 6:45 pm
✔ 最佳答案
a^4 + a^2 b^2 + b^4= a^4 + 2a^2 b^2 + b^4 - a^2 b^2= (a^2 + b^2)^2 - (ab)^2= (a^2 + b^2 - ab) (a^2 + b^2 + ab)


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