2sally2
07.08.2021 •
Mathematics
(a+b)² = a²+2ab+b² prove that.
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Ответ:
see explanation
Step-by-step explanation:
(a + b)²
= (a + b)(a + b)
Each term in the second factor is multiplied by each term in the first factor, that is
a(a + b) + b(a + b) ← distribute parenthesis
= a² + ab + ab + b² ← collect like terms
= a² + 2ab + b²
Ответ: