Question

si me ayudan les doy corona

Answer 1

${a}^{2} + {b}^{2} = {a}^{2} + 2ab + {b}^{2} - 2ab$

${a}^{2} + 2ab + {b}^{2} = {(a + b)}^{2}$

ahora ordenamos la primera ecuacion

${(a + b)}^{2} - 2ab$

reemplazando datos

$= {8}^{2} - 2(30) \\ = 64 - 30 \\ = 34$

RPTA=34