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Multiplication of expressions 1
Contributed by: McDermott
Multiply (x+5)(x+4)
Drag and drop 
So the answer is 
+4
X
4X
?
X2
?
x2+9x+20
?
X
5X
?
20
?
+5
Multiply (X-5)(X-4)
So the answer is 
-4
X
-4X
?
X2
?
X
X2 -9X +20
?
-5X
?
20
?
-5
Multiply (x+6)(x+4)
So the answer is 
+4
X
4X
?
X2
?
x2 +10x +24
?
X
6X
?
24
?
+6
Multiply (x-6)(x-4)
So the answer is 
-4
X
-4X
?
X2
?
x2 _ 10x +24
?
X
-6X
?
24
?
-6
Multiply (x+6)(x-4)
So the answer is 
-4
X
-4X
?
X2
?
x2 + 2x -24
?
X
+6X
?
-24
?
+6
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