Smarty0905
Smarty0905
24-08-2017
Mathematics
contestada
I need help with this equation (r-s)^2
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mreijepatmat
mreijepatmat
26-08-2017
( r-s)²
Remember : (a-b)² = a²-2ab+b²
(r-s)² = r² - 2rs + s²
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