When a=3,b=-2,find the value of a square -2ab + b square
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Answer:
Given a+b = 5 & ab = 6
(a+b)
3
=a
3
+b
3
+3ab(a+b)
(5)
3
=a
3
+b
3
+3×6[5]
125=a
3
+b
3
+90
a
3
+b
3
= 35
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