Question

Ayudenme pls es para hoy

Answer 1

RESOLUCIÓN:

$(a - b) {}^{2} = {a}^{2} + {b}^{2} - 2ab \\ (9) {}^{2} = {a}^{2} + {b}^{2} - 2(7) \\ 81 = {a}^{2} + {b}^{2} - 14 \\ 81 + 14 = {a}^{2} + {b}^{2} \\ 95 = {a}^{2} + {b}^{2}$

RESPUESTA:

${a}^{2} + {b}^{2} = 95$