Question

Pessoal pff me ajudem

Answer 1

a)
ΔABC 
AB = 2 + 4 = 6
AC = 6 + x

ΔAEF
AE = 2 
AF = x

$\frac{AB}{AE} = \frac{AC}{AF}$
$\frac{6}{2} = \frac{6+x}{x}$

6x = 12 + 2x
6x - 2x = 12
4x = 12
x = 3