Question

if a+b=5 and ab=6, find the value of a²-b²​

Answer 1

Answer:

Formula

(a+b)² =a² +b² +2ab

=>a²+b² =(a+b)² −2ab

Given, a+b=5 and ab=6

So, a²+b²=(a+b)²−2ab

=(5)²−2×(6)

=25−12

=13

therefore, a²-b²=13 is the corrext ans

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Answer 2

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