Question

The value of (1²+2²+3²+...+15²)-(1+2+3+...+15) IS

Answer 1

Answer:

210

Step-by-step explanation:

Answer 2

Answer:

$((1^{2})+(2^{2})...(15^{2}))-(1+2+3....=1+15)$

540-120

420is the correct answer

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Step-by-step explanation: