Question

In the expressions below, decide what missing value would make the expressions the same.
Select options below
2
(
x
2
+
x
)
−
□
is equivalent to
2
x
2
. What quantity belongs in the box?
Choose...
3
x
4
+
2
is equivalent to
x
4
+
2
(
□
+
1
)
. What quantity belongs in the box?
Choose...
−
x
3
−
□
+
2
is equivalent to
2
−
x
3
+
x
. What quantity belongs in the box?
Choose...

Answer 1

1) 2x
2) x^4
3) −x