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Mathematics
Mathematics
Problem
If
∣
a
∣
=
5
|a| = 5
∣
a
∣
=
5
,
∣
a
−
b
∣
=
8
|a - b| = 8
∣
a
−
b
∣
=
8
and
∣
a
+
b
∣
=
10
|a + b| = 10
∣
a
+
b
∣
=
10
, then
∣
b
∣
|b|
∣
b
∣
is equal to a. 1 b.
57
\sqrt{57}
57
c. 3 d. None of these
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