x²(2x-1)²+(1-2x)² 跳步骤的别来
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x²(2x-1)²+(1-2x)² 跳步骤的别来
x²(2x-1)²+(1-2x)² 跳步骤的别来
x²(2x-1)²+(1-2x)² 跳步骤的别来
x²(2x-1)²+(1-2x)²
=x²(2x-1)²+(2x-1)²
=(2x-1)²(x²+1)
x²(2x-1)²+(1-2x)²=x²(2x-1)²+(2x-1)²=(2x-1)²(x²+1)