SOLUTION: Please help solve for x in the following problem, I couldn't figure it out
log(x) + log(x+90)=3
Algebra.Com
Question 577511: Please help solve for x in the following problem, I couldn't figure it out
log(x) + log(x+90)=3
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
adding logs is akin to multiplying quantities
"un"logging ___ (x)(x + 90) = 10^3 ___ x^2 + 90x - 1000 = 0
factoring ___ (x + 100)(x - 10) = 0
remember, logs are NOT defined for negative arguments
RELATED QUESTIONS
The directions for the problem is "Solve each equation for x to three significant digits” (answered by fractalier)
Please help solve for x in the following problem, I couldn't figure it out just by... (answered by scott8148)
log[27](x-1)-log[27](x-3)=1/3 I need to solve this and I just can't figure it out,... (answered by MathTherapy)
1. Solve the following equations
a) log(base 5)x+2 + log(base 5) x-2 - log(base 5)4 =... (answered by mananth)
I need help solving for x in the following equation log(x+3) + log(x-1) = log... (answered by Theo)
Please help me solve the following system for (x,y):
{{{log(9,x)}}} + {{{log(y,8)}}} = 2
(answered by Edwin McCravy)
solve:
log base 3 (x+7)-log base 3 x=3
please help me figure this out
thanks a... (answered by longjonsilver)
Please help me in solving this problem
Q) Solve for x
log(x+1)+log(x-1)=log 8
(answered by robertb)
1. Solve the following equations
a) log(base 2)x+1 - log(base 2) 2 = log(base 2)5... (answered by lynnlo)