Question

Me ajudem por favor. Preciso urgente.

Answer 1

X² -24 + 135 = 0

A = 1, B= -24, C= 135

a = [-A + √(B²-4.A.C)] / 2.A

a = {-1+√[(-24)²-4.1.135]} / 2.1

a = {-1 + √36} / 2

a = 5 / 2= 2,5                                                                                        

 

b = [-A - √(B²-4.A.C)] / 2.A

b = {-1-√[(-24)²-4.1.135]} / 2.1

b = (-1 - √36) / 2

b = (-1 - 6) / 2= 3,5                                                                                         

Razão entre AB e BC = (a / b) = (2,5 / 3,5) = 0,71