1.

What is the value of a2-ab+b2 ?

Answer»

GIVEN,

⇒a+B=10

⇒ab=16

⇒(a+b)

2

=a

2

+b

2

+2ab

⇒10

2

=a

2

+b

2

+2(16)

∴a

2

+b

2

=68

⇒a

2

+b

2

+ab=68+16=84

⇒a

2

+b

2

−ab=68−16=52


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