बीजगणित सूत्र

बीजगणित सूत्र

(a + b)²= a² + b² + 2ab

(a – b)²= a² + b² – 2ab

a² – b²= (a + b)(a – b)

(a + b)³= a³ + b³ + 3ab(a + b)

(a – b)³= a³ – b³ – 3ab(a – b)

a³ + b³= (a + b)(a² + b² – ab)

a³ – b³= (a – b)(a² + b² + ab)

(a + b)² + (a – b)² = 2(a² + b²)

(a + b)² – (a – b)² = 4ab