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Introduction to algebra v2 725x1024

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Introduction to Algebra 1. In algebra, we substitute number with letters or alphabets to arrive at a solution. 2. We use letters like x,m,a,b,etc. to represent unknown quantities in the equation. Important Algebraic Formulae 1. (a + b)2 = a + 2ab + b2 2. (a - b) = a2 - 2ab + b2 3. a? - b2 = (a + b)(a - b) 4. a? + b2 = (a + b)2 - 2ab = (a - b)2 + 2ab 5. (a + b) = a + 3a²b + 3ab2 + b3 6. (a - b) = a - 3a²b + 3ab2-b3 7. a3 + b3 = (a + b) (a? - ab + b) 8. a - b = (a - b) (a2 + ab + b) ...
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