94.1k views
0 votes
Simplify (7-6t)+(8-3i)

2 Answers

4 votes
Use the power rule
a
m
a
n
=
a
m
+
n
a
m
a
n
=
a
m
+
n
to combine exponents.

56
+
21
i
+
48
i

18
i
1
+
1
-
56
+
21
i
+
48
i
-
18
i
1
+
1
Add
1
1
and
1
1
to get
2
2
.

56
+
21
i
+
48
i

18
i
2
-
56
+
21
i
+
48
i
-
18
i
2
Rewrite
i
2
i
2
as

1
-
1
.

56
+
21
i
+
48
i

18


1
-
56
+
21
i
+
48
i
-
18

-
1
Multiply

18
-
18
by

1
-
1
to get
18
18
.

56
+
21
i
+
48
i
+
18
-
56
+
21
i
+
48
i
+
18
Add

56
-
56
and
18
18
to get

38
-
38
.

38
+
21
i
+
48
i
-
38
+
21
i
+
48
i
Add
21
i
21
i
and
48
i
48
i
to get
69
i
69
i
.
User Wasabigeek
by
6.8k points
3 votes
Solution) i = {2.666666667, 1.166666667}