问题:
计算:
(1)(x 2) 8•x 4÷x 10-2x 5•(x 3) 2÷x.
(2)3a 3b 2÷a 2+b•(a 2b-3ab-5a 2b).
(3)(x-3)(x+3)-(x+1)(x+3).
(4)(2x+y)(2x-y)+(x+y) 2-2(2x 2-xy).
计算:
(1)(x 2) 8•x 4÷x 10-2x 5•(x 3) 2÷x.
(2)3a 3b 2÷a 2+b•(a 2b-3ab-5a 2b).
(3)(x-3)(x+3)-(x+1)(x+3).
(4)(2x+y)(2x-y)+(x+y) 2-2(2x 2-xy).
(1)(x 2) 8•x 4÷x 10-2x 5•(x 3) 2÷x.
(2)3a 3b 2÷a 2+b•(a 2b-3ab-5a 2b).
(3)(x-3)(x+3)-(x+1)(x+3).
(4)(2x+y)(2x-y)+(x+y) 2-2(2x 2-xy).
参考答案: