Question

( x+2 ) (al cuadrado) = 81
Me ayudaan?​

Answer 1

$\bold\red{Respuesta:-}$

$( {x + 2})^{2} = 81 \\ \\ {x}^{2} + 2(x)(2) + {2}^{2} = 81 \\ \\ {x}^{2} + 4x + 4 = 81 \\ \\ {x}^{2} + 4x + 4 - 81 = 0 \\ \\ {x}^{2} + 4x - 77 = 0 \\ \\ (x + 11)(x - 7) = 0 \\ \\ x + 11 = 0 \\ x = - 11 \\ \\ x - 7 = 0 \\ x = 7$

Answer 2

Answer:

Answer:

x=79

Step-by-step explanation:

x+2=81

Step 1: Subtract 2 from both sides.

x+2−2=81−2

x=79