Algebraic identities
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Algebraic identities
- 2. • The standard algebraic identities are: • (a + b)2 = a2 + 2ab + b. ... • (a – b)2 = a2 – 2ab + b. ... • a2 – b2 = (a + b)(a – b) • (x + a)(x + b) = x2 + (a + b) x + ab. • (a + b + c)2 = a2 + b2 + c2 + 2ab + 2bc + 2ca. • (a + b)3 = a3 + b3 + 3ab (a + b) • (a – b)3 = a3 – b3 – 3ab (a – b)