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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 |
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Answer» Step-by-step EXPLANATION: 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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