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Maths CBSE Homework Assignments
Class 7
Algebraic expressions
Multiplication of algebraic expressions II
3.
Product of sum and difference (integers)
Question:
5
m.
Do the multiplication:
4
s
5
−
7
t
2
⋅
4
s
5
+
7
t
2
Choose the correct answer:
16
s
10
−
56
s
5
t
2
−
49
t
4
16
s
10
−
56
s
5
t
2
+
49
t
4
16
s
7
−
49
t
2
16
s
10
−
49
t
4
4
s
10
−
7
t
4
16
s
10
+
56
s
5
t
2
+
49
t
4
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