eyomidesira eyomidesira

17-03-2020
Mathematics

contestada

can someone show me a step by step of how a²+b² = (a+b)²-2ab ?

Respuesta :

iguanamiyagi iguanamiyagi

17-03-2020

Answer:

Step-by-step explanation:

[tex](a + b)^{2} = (a + b) * (a + b) = a*a + a*b + a*b + b*b = a^{2} + 2ab + b^{2} \\\\Therefore, \\\\(a + b)^{2} - 2ab = a^{2} + b^{2}[/tex]

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