Question

Si a + b = 7 y ab= 4 hallar (a² + b²)​²​

Answer 1

Respuesta:

1681

Explicación paso a paso:

$(a+b)^{2}=a^{2}+2ab+b^{2} \\\\(7)^{2}= a^{2}+b^{2}+2(4)\\\\49-8= a^{2}+b^{2}\\\\41= a^{2}+b^{2}$

Hallar:

$( a^{2}+b^{2})^{2} \\\\(41)^{2} \\\\1681$