Question

Si x = 3 / y = 4, encones (x + y)² = __

Answer 1

Respuesta:

$\frac{361}{16}$

Explicación paso a paso:

$x = \frac{3}{y} \\ \\ \frac{3}{y} = 4 \\ \\ 3 = 4y \\ \\ \fbox{\frac{3}{4} = y} \\ \\x = \frac{3}{ \frac{3}{4} } \\ \\ x = \frac{12}{3} \\ \\\fbox{ x = 4} \\ \\ (x + y)^{2} \\ \\ (4 + \frac{3}{4} )^{2} \\ \\ ( \frac{16 + 3}{4} )^{2} \\ \\ ( \frac{19}{4} )^{2} \\ \\ \frac{361}{16}$

Answer 2

Respuesta:

X²+2xy+y²=3²+2×3×4+4²=9+24+16=9+40=49 rota=49

Explicación paso a paso: