Question

Alguem sabe resolver isso daqui.Me ajudem

Answer 1

15/6 = X/5
MULTIPLICA EM CRUZ
6X = 15 * 5
6X = 75
X = 12.5 *****

2
5/ ( X + 2) = ( X + 3)/6
MULTIPLICA EM CRUZ
( X + 2)( X + 3)  = 6 * 5
X² +3X + 2X + 6 = 30
X² + 5X + 6 - 30 = 0
X² + 5X - 24 = 0
DELTA = 25 + 96 = 121 OU +- V121  = +-11 ****

X = ( -5 +-11)/2

X1 =6/2 = 3 ****
X2 = -16/2=-8 ***
Logo
x + 2 = 3 + 2 = 5 ***
x + 2 = -8 + 2 = -6 ****

x + 3 = 3 + 3 = 6 ****
x + 3 = -8 + 3 = -5 ***
Resposta : +-5 e +-6