问题
计算题
计算(1) (-1)100×|-5|-4×(-3)-42
(2)3x2-[7x-3(4x-3)-2x2]
答案
解:(1)原式=1 ×5- (-12 )-16
= 5+12-16
= 1
(2)原式=
=
=
=
计算(1) (-1)100×|-5|-4×(-3)-42
(2)3x2-[7x-3(4x-3)-2x2]
解:(1)原式=1 ×5- (-12 )-16
= 5+12-16
= 1
(2)原式=
=
=
=