Asked in PPSC, FPSC and other one-paper exams (compiled from unofficial resources).
AlgebraAlgebraic Expressions and Identities
If $a = 7$, $b = 5$, and $c = 3$, then the value of $a^2 + b^2 + c^2 - ab - bc - ca$ is?
- A.$12$Correct answer
- B.$15$
- C.$18$
- D.$21$
Timed quizzes, instant results, track your progress — free
Practice these MCQs in the appQuick fact: The value of $a^2 + b^2 + c^2 - ab - bc - ca$ is $12$.