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using the formula (a-b)2=(a2-2ab+b2),evaluate (196)2, (689)2 ,(891)2 - Maths - Linear Equations in Two Variables - 14395159 | Meritnation.com
A Minus B Whole Square Formula - Examples | (a-b)^2 Formula
Solved (1) Using a calculator or otherwise, determine the | Chegg.com
How to factorise using the identity ''(a-b)2 ==a2+b2-2ab" ? - YouTube
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Was doing cosine law with an sss triangle. I keep getting error on my ti-84 but it works fine on an online calculator. What is causing this? Thanks. : r/trigonometry