Mathematics
Senior High
Solved
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(3) x4 + 2x2+4=0から x4 +4x2+4-2x2=0
よって
(x2+2)-(√2x)^2=0 マ
ゆえに
(x2+√2x+2)(x²-√2x+2)=0
よって
x2+√2x+2=0 または x2-√2x+2=0
Answers
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