问题
解答题
①|-2|-(1+
②(3-2)2-(3+2)2; ③(
|
答案
(1)原式=2-1+2=-1;
(2)原式=1-52=1-25=-24;
(3)原式=(
)2+(3
+2
)2=3+2+25
+5=10+210
.10
①|-2|-(1+
②(3-2)2-(3+2)2; ③(
|
(1)原式=2-1+2=-1;
(2)原式=1-52=1-25=-24;
(3)原式=(
)2+(3
+2
)2=3+2+25
+5=10+210
.10