Mathematics
Senior High
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45
(1
二次方程式を平方完成で角
2
x ²²-8x + 12 = 0.
(x-4)²-16+ /2=0
√x +41 ²2² = 4
X = 4 = ± 2
x=4±2
X = 2₁6₂₁₂
2
(-2
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