If a+b =2 & ab=5 then find the value of a²+b².plz answer fast and in – InterviewSolution

1.

If a+b =2 & ab=5 then find the value of a²+b².plz answer fast and in step by step explanation.NO SPAM ALLOWED

Answer»

-6

Step-by-step EXPLANATION:

(a+b)2=a2+b2+2AB

a2+b2=(a+b)2--2ab

=2^2-(2×5)

=4-10

=-6

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