Question
Download Solution PDFযদি a + b = 8 আর ab = 13,তাহলে a2 - ab + b2 -এর মান খুঁজুন
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFপ্রদত্ত :
a + b = 8 , ab = 13
ব্যবহৃত সূত্র :
\((a+b)^2 = a^2+b^2+2ab\)
গণনা :
\((8)^2 = a^2+b^2+2\times 13\) or \(a^2+b^2 = 64-26 =38\)
তাই, \(a^2+b^2-ab=38-13=25\)
∴ উত্তর হল 25।
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