共50条信息
计算:
\((1)(-3x)·(2x^{2}-x-1)\);
\((2)\left( -\dfrac{1}{2}x \right)\cdot (4{{x}^{2}}+2x-1)-\dfrac{1}{3}{{x}^{2}}(3x-6{{x}^{2}})\).
\((2)\)\((7+4\sqrt{3}){{(2-\sqrt{3})}^{2}}+(2+\sqrt{3})(2-\sqrt{3});\)
先化简,再求值:\((3x+2)(3x-2)-5x(x+1)-{{(x-1)}^{2}}\),其中\(x^{2}-x-2018=0\).
\((1)a(a^{2}-3)+a^{2}(a+3)-3a(a^{2}-a-1)\)
\((2)(x-6)(x+4)-3(x+5)(x-8)\)
\((1)\)已知一个多项式除以\(2x^{2}y\),其商为\(4{{x}^{3}}{{y}^{2}}-6{{x}^{3}}y+2{{x}^{4}}{{y}^{2}}\),求原多项式;
\((2)\)已知被除式为\(15xy-10xy^{2}\),商为\(-4xy\),余式为\(3xy-2xy^{2}\),求除式.
\((2)(-x)⋅(3xy-6x^{2}y^{2})÷(3x^{2})\)
\((1){{\left( -{{a}^{2}} \right)}^{3}}-6{{a}^{2}}\bullet {{a}^{4}}\) \((2){\left(p-q\right)}^{4}÷{\left(q-p\right)}^{3}·{\left(p-q\right)}^{2} \)
\((3){{(3.14-\pi )}^{0}}-{{3}^{2}}+\left| -4 \right|+{{(\dfrac{1}{2})}^{-1}}\) \((4)(x+1)({{x}^{2}}-2x-3)\)
\((5)(2a+b)(b-2a)-(a-3b)^{2}\) \((6)\) \({{(x+1)}^{2}}{{(x-1)}^{2}}\)
\((1){{(-\dfrac{n}{m})}^{-3}}\);
\((2)(3x^{2}y^{-2})^{-3}\);
\((3)\dfrac{3{{x}^{-2}}{{y}^{-3}}}{4{{x}^{-5}}{{y}^{2}}}\);
\((4)5a^{-5}b^{2}-(2ab^{-1})^{2}\);
\((5)(m^{3}n)^{-2}·(2m^{-2}n^{-3})^{-2}\).
进入组卷