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5 votes
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If (a + b)² = 80 and ab=12, find the
value of a² +6?

User Osprey
by
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1 Answer

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Answer:

(a+b)²=a²+2ab+b²=80

a²+b²=80-2ab

=80-2(12)

=80-24

=56

User Alexey Bondarchuk
by
4.5k points