问题:
计算下列各题:
(1)(5m 3n 2) 2•(-2m 2) 3•(-n 3) 4;
(2)(π-3) 0+(-0.125) 2011×8 2011;
(3)(2a m-3b n)(3a n+5b m);
(4)(
1
3
x+
3
4
y)(
1
3
x-
3
4
y)-(
1
3
x-
3
4
y) 2.
计算下列各题:
(1)(5m 3n 2) 2•(-2m 2) 3•(-n 3) 4;
(2)(π-3) 0+(-0.125) 2011×8 2011;
(3)(2a m-3b n)(3a n+5b m);
(4)(
x+
y)(
x-
y)-(
x-
y) 2.
(1)(5m 3n 2) 2•(-2m 2) 3•(-n 3) 4;
(2)(π-3) 0+(-0.125) 2011×8 2011;
(3)(2a m-3b n)(3a n+5b m);
(4)(
1 |
3 |
3 |
4 |
1 |
3 |
3 |
4 |
1 |
3 |
3 |
4 |
参考答案: