expand(2a+3b+5)square using identity
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Answer:
4a² + 9b² + 25 + 12ab + 30b + 20a
Step-by-step explanation:
(a + b + c)² = a² + b² + c² +2ab +2bc + 2ca
(2a + 3b + 5)² = (2a)² + (3b)² + (5)² + 2.2a.3b + 2.3b.5 + 2.5.2a
= 4a² + 9b² + 25 + 12ab + 30b + 20a
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