(2x-3)²=2x²-1
4x²-12x+9=2x²-1
2x²-12x+10=0
x²-6x+5=0 , (x-1)(x-5)=0
x1=1 , x2=5
(a×b=0 ⇔ a=0 ∨ b=0)
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(2x-3)²=2x²-1
4x²-12x+9=2x²-1
2x²-12x+10=0
x²-6x+5=0 , (x-1)(x-5)=0
x1=1 , x2=5
(a×b=0 ⇔ a=0 ∨ b=0)