参考・概略です
(3) 63x²-1=35
63x²=35+1
63x²=36
7x²=4
x²=4/7
x²=28/49
x=±√28/√49
x=±2√7/7
参考・概略です
(3) 63x²-1=35
63x²=35+1
63x²=36
7x²=4
x²=4/7
x²=28/49
x=±√28/√49
x=±2√7/7
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