(-2x)²+(6x³-12x⁴)÷﹙3x²﹚
问题描述:
(-2x)²+(6x³-12x⁴)÷﹙3x²﹚
答
(-2x)²+2x-4x²=2x
答
(-2x)²+(6x³-12x⁴)÷﹙3x²﹚
=4x²+2x-4x²
=2x