9 a2 b - 6 ab + 10b2 by 6ab
Answers
Answered by
0
Answer:
13
Formula
(a+b)
2
=a
2
+b
2
+2ab
=>a
2
+b
2
=(a+b)
2
−2ab
Given, a+b=5 and ab=6
So, a
2
+b
2
=(a+b)
2
−2ab=5
2
−2×6=25−12=13
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