Art of Problem Solving

2025 AMC 8 Problems/Problem 1: Difference between revisions

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Let m and n be 2 integers such that m > n. Suppose m + n = 20, m² + n² = 328, find m² - n².
Let m and n be 2 integers such that m > n. Suppose m + n = 20, m² + n² = 328, find m² - n².
A) 280
B) 292
C) 300
D) 320
E) 340


<math>\textbf{(A)}\ 280 \qquad \textbf{(B)}\ 292 \qquad \textbf{(C)}\ 300 \qquad \textbf{(D)}\ 320 \qquad \textbf{(E)}\ 340</math>
<math>\textbf{(A)}\ 280 \qquad \textbf{(B)}\ 292 \qquad \textbf{(C)}\ 300 \qquad \textbf{(D)}\ 320 \qquad \textbf{(E)}\ 340</math>

Revision as of 07:26, 18 February 2024

Let m and n be 2 integers such that m > n. Suppose m + n = 20, m² + n² = 328, find m² - n².

$\textbf{(A)}\ 280 \qquad \textbf{(B)}\ 292 \qquad \textbf{(C)}\ 300 \qquad \textbf{(D)}\ 320 \qquad \textbf{(E)}\ 340$