Question

Si m-n= 5 y mn = 3, calcule m2 + n2

pls ;-;
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Answer 1

Respuesta:

=31

Explicación paso a paso:

${(m - n)}^{2} = {m}^{2} - 2mn + {n}^{2}$

Reemplazamos datos:

${(5)}^{2} = {m}^{2} - 2(3) + {n}^{2}$

$25 = {m}^{2} - 6 + {n}^{2}$

$25 + 6 = {m}^{2} + {n}^{2}$

$31 = {m}^{2} + {n}^{2}$