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Q.5 If a + b = 11 and ab = 15, then a^2+b^2is equal to:Ans1. 902. 913. 934. 92​

Answer»

Step-by-step EXPLANATION:

GIVEN,

a+b=11

ab=15

here they ASKED a²+b²=?

a²+b² can be write as (a+b)² -2ab =a²+b²

=(11)²-2(15)

=121-30

=91 is the ANSWER hope it helps



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