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Price a square B square + 2 Ab + 2 BC + 2 CA |
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Answer» Hi friend --------------- Your answer -------------------- FACTORISATION --------------------------- a² + b² + 2AB + 2bc + 2ca => a² + b² + c² + 2ab + 2bc + 2ca - c² [ADDING and subtracting c².] => (a² + b² + c² + 2ab + 2bc + 2ca) - c² => (a + B + c)² - c² => (a + b + c + c)(a + b + c - c). [Using identity => a² - b² = (a + b)(a - b)] => (a + b + 2c)(a + b) HOPE IT HELPS |
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