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−
5
+
8
-5+8
−
5
+
8
+
−
.
ln
>
<
×
÷
/
log
≥
≤
(
)
log
x
=
%
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"(x+1)/2+4=7"
"factor x^2+5x+6"
"integrate cos(x)^3"
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-5+8
-5+8
-5+8
1
Use a number line.
-5
-4
-3
-2
-1
0
1
2
3
2
Therefore,
−
5
+
8
=
3
-5+8=3
−
5
+
8
=
3
.
3
3
3
Done
3
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