Student of: 5I (ended) New Scratcher Joined 3 years, 6 months ago Australia
me is aussie
me work on algebra at home.i learned these formulas a2 – b2 = (a – b)(a + b)(a + b)2 = a2 + 2ab + b2a2 + b2 = (a + b)2 – 2ab(a – b)2 = a2 – 2ab + b2(a + b + c)2 = a2 + b2 + c2 + 2ab + 2bc + 2ca