Explicación paso a paso:
(-a + 2b)² = (2b - a)²
= (2b)² - 2(ab)(a) + a²
= 2b² - 2a²b + a² resultado.
La fórmula de binomio al cuadrado es:
[tex](a + b) = a^{2} + 2(a)(b) +b^{2}[/tex]
[tex]SOLUCION\\[/tex]
[tex](a+2b)^{2} =a^{2} + 2(a)(2b) + (2b)^{2} \\(a+2b)^{2}=a^{2} + 4ab + 4b^{2}[/tex]
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Explicación paso a paso:
(-a + 2b)² = (2b - a)²
= (2b)² - 2(ab)(a) + a²
= 2b² - 2a²b + a² resultado.
La fórmula de binomio al cuadrado es:
[tex](a + b) = a^{2} + 2(a)(b) +b^{2}[/tex]
[tex]SOLUCION\\[/tex]
[tex](a+2b)^{2} =a^{2} + 2(a)(2b) + (2b)^{2} \\(a+2b)^{2}=a^{2} + 4ab + 4b^{2}[/tex]