计算 (1)(-2)2+4×(-3)2-(-4)2÷(-2) (2)(-
|
(1)原式=4+4×9-16÷(-2)
=4+36+8
=48;
(2)原式=(-
+1 6
+1 20
-4 5
)×(-60)5 12
=10-3-48+25
=-16.
计算 (1)(-2)2+4×(-3)2-(-4)2÷(-2) (2)(-
|
(1)原式=4+4×9-16÷(-2)
=4+36+8
=48;
(2)原式=(-
+1 6
+1 20
-4 5
)×(-60)5 12
=10-3-48+25
=-16.