Mathematics
Senior High

この3つの問題の解き方を教えてください!過程を細かくかいてくれるとありがたいです😣

因数分解

Answers

⑴x^4+4x^2+16
=(x^2+4)^2-4x^2
=[(x^2+4)+2x][(x^2+4)-2x]
=(x^2+2x+4)(x^2-2x+4)

⑵x^4-7x^2•y^2+y^4
=(x^2+y^2)-9x^2•y^2
=[(x^2+y^2)+3xy][(x^2+y^2)-3xy]
=(x^2+3xy+y^2)(x^2-3xy+y^2)

⑶4x^4+1
=(2x^2+1)^2-4x^2
=[(2x^2+1)+2x][(2x^2+1)-2x]
=(2x^2+2x+1)(2x^2-2x+1)

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