Question

Which expression is equivalent to

(
6
x
3
−
5
x
2
−
6
)
+
(
3
x
2
+
10
−
9
x
3
)
?


9
x
3
−
4
x
2
+
4

9
x
3
−
4
x
2
+
4

−
3
x
3
−
2
x
2
+
4

−
3
x
3
−
2
x
2
+
4

−
3
x
3
+
8
x
2
−
4

−
3
x
3
+
8
x
2
−
4

14
x
3
+
8
x
2
+
16

Answer 1

may be 148 as ithink

it may be 148