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WAEC Mathematics 2022 Paper
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© africaexams.com
Question : 10
Total: 47
If a = 3 and b = -7, find the value of
5
b
+
(
a
+
b
)
2
(
a
−
b
)
2
0.51
0.91
-0.19
-0.51
Validate
Solution:
5
b
+
(
a
+
b
)
2
(
a
−
b
)
2
=
5
*
−
7
+
(
3
+
−
7
)
2
(
3
−
−
7
)
2
=
−
35
+
16
10
2
=
−
19
100
or -0.19
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