Question

write identities of algebra​

Answer 1

Step-by-step explanation:

Identity I: (a + b)2 = a2 + 2ab + b2

Identity III: a2 – b2= (a + b)(a – b)

Identity IV: (x + a)(x + b) = x2 + (a + b) x + ab.

Identity V: (a + b + c)2 = a2 + b2 + c2 + 2ab + 2bc + 2ca.

Identity VI: (a + b)3 = a3 + b3 + 3ab (a + b)

Answer 2

★ Some Standard Algebraic Identities list are given below:

✒Identity I: (a + b)² = a² + 2ab + b²

✒Identity II: (a – b)²= a² – 2ab + b²

✒Identity III: a² – b²= (a + b)(a – b)

✒Identity IV: (x + a)(x + b) = x² + (a + b) x + ab

✒Identity V: (a + b + c)² = a² + b² + c²+ 2ab + 2bc + 2ca

✒Identity VI: (a + b)³= a³ + b³ + 3ab (a + b)

✒Identity VII: (a – b)³ = a³ – b³– 3ab (a – b)

✒Identity VIII: a³+ b³+ c³– 3abc = (a + b + c)(a² + b² + c²– ab – bc – ca)

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