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What is the value of \(12^2 + 13^2\)?

Answer and explanation

Correct answer: 313

Compute squares first: \(12^2=144\) and \(13^2=169\). Adding gives \(144+169=313\). The nearest distractor 312 likely comes from an off-by-one addition error; 323 and 303 reflect incorrect square values. Exam tip: find each square separately and check the unit digit (4+9=13 ⇒ unit digit 3 with a carry of 1) to verify quickly.

Related tags

ExponentsNumber SystemsArithmeticPerfect SquaresMathematicsClass 9 Mcq

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