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Subjects
Mathematics State Board
Class 7
Algebra
Introduction to Identities
1.
One mark exercise problems I
Exercise condition:
2
m.
1
. If \(a + b = 5\) and \(a^2 + b^2 = 13\), then \(ab =\)
12
13
6
5
.
2
. \((5 + 20)(-20 - 5) =\)
-425
0
-625
375
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