Question

list all the identities ( formulas ) please give me answer I will mark u as brainlist​

Answer 1

Answer:

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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)

Answer 2

Answer:

*(a + b)2 = a2 + 2ab + b2

*(a – b)2 = a2 – 2ab + b2

* 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)

*a3 + b3 + c3– 3abc = (a + b + c)(a2 + b2 + c2)