2[710² + 690²] − (710 + 690)² = ?
Show answer & explanation
Correct answer: B
Explanation
Given:
2[710² + 690²] − (710 + 690)²
According to the formula:
2(a² + b²) − (a + b)² = (a − b)²
= (710 − 690)²
= (20)²
= 400
SSC MTS 2026 PYQ — Question 7
SSC MTS - 20 Feb 2026 - Shift 2 • Quantitative Aptitude • Q7