共50条信息
计算:
\((1){{(-2009)}^{0}}+{{(\dfrac{1}{2})}^{-1}}+{{(-2)}^{3}}\);
\((2)a^{3}·a^{3}+(-3a^{3})^{2}+a^{7}÷a\)
\((3)(2x-y)^{2}-(2y+x)(2x-y)\)
\((4)(a+3b-2c)(a-3b-2c)\)
\((1)-2{{(\dfrac{1}{3}x-\dfrac{3}{2}y)}^{2}}\) \((2)2(a^{2})^{3}-a^{2}·a^{4}+(-2a^{4})^{2}÷a^{2}\)
\((3)-{1}^{0}+(- \dfrac{1}{2}{)}^{-2}-0.{125}^{100}×(-8{)}^{100} \) \((4)(3{x}^{2}y-xy2+ \dfrac{1}{2}xy)÷(- \dfrac{1}{2}xy) \)
进入组卷