(a+b+c+d)²what is the formulae for it
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Answered by
3
Step-by-step explanation:
(a+b+c+d)² → a² + b² + 2ab + c² + d² + 2cd + 2 (ac + bc + ad + bd)
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Answered by
1
Answer:
a²+b²+c²+d²+2(ab+bc+ac+ad+bd+cd)
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