Question

Ifa and ß are the roots of the equation (log ,x)^2 + 4(log,x)-1=0 then the value of log a + logoſ equals
(A) 18
(B)-16
(C) 14
(D)-18

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Answer 1

Answer:

I THINK (B)=-16

Step-by-step explanation:ACCORDING TO IT -(Logx)(logx²) + logx³ -5 =0

Logx · 2logx + 3Logx - 5 = 0

2log²x +3logx -5 =0

Logx = (-3+- sqrt 49 )/4

Logx = 1 or Logx = -5/2

X=10 or x= 10 ^ (-5/2)