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计算:(1)−x4y5z5÷16xy4z3×(−12xyz2)2;(2)[x(x2y2-xy)-y(x2-x3y)]÷3x2y;(3)解不等式:(1-3y)2+(2y-1)2>13(y-1)(y+1);(4)在x2+px+8与x2-3x+q的积中不含x3与x项,求p、q的值?

题目详情
计算:
(1)x4y5z
1
6
xy4z3×(−
1
2
xyz2)2;
(2)[x(x2y2-xy)-y(x2-x3y)]÷3x2y;
(3)解不等式:(1-3y)2+(2y-1)2>13(y-1)(y+1);
(4)在x2+px+8与x2-3x+q的积中不含x3与x项,求p、q的值?
▼优质解答
答案和解析
(1)原式=-x4y5z5•6xy4z3•(-12xyz2)2=-32x5y3z6;(2)原式=[x2y(xy-1)-x2y(1-xy)]•13x2y,=x2y(2xy-2)•13x2y,=23xy−23;(3)化简得:-10y>-15,∴y<32;(4)(x2+px+8)(x2-3x+q),=x4+(-3+p...