Question
Download Solution PDFIf a + b = 5 and ab = 6, then find 3(a2 + b2).
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
a + b = 5 and ab = 6
Concept used:
a2 + b2 = (a + b)2 - 2ab
Calculation:
3(a2 + b2)
⇒ 3{(a + b)2 - 2ab}
⇒ 3{52 - 2 × 6}
⇒ 39
∴ The required value is 39.
Last updated on Jun 13, 2025
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