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Algebra Examples
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Algebra
Subtract 3x^2+8x--9x^2+3x-8
3
x
2
+
8
x
−
−
9
x
2
+
3
x
−
8
3
x
2
+
8
x
-
-
9
x
2
+
3
x
-
8
Step 1
Replace all occurrences of
−
-
−
-
with a single
+
+
. Two
consecutive
minus
signs have the same mathematical meaning as a single
plus
sign because
−
1
⋅
−
1
=
1
-
1
⋅
-
1
=
1
3
x
2
+
8
x
+
9
x
2
+
3
x
−
8
3
x
2
+
8
x
+
9
x
2
+
3
x
-
8
Step 2
Add
3
x
2
3
x
2
and
9
x
2
9
x
2
.
12
x
2
+
8
x
+
3
x
−
8
12
x
2
+
8
x
+
3
x
-
8
Step 3
Add
8
x
8
x
and
3
x
3
x
.
12
x
2
+
11
x
−
8
12
x
2
+
11
x
-
8
⎡
⎢
⎣
x
2
1
2
√
π
∫
x
d
x
⎤
⎥
⎦
[
x
2
1
2
π
∫
x
d
x
]
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