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March 31, 2015

March 31, 2015

Posted by **Lucy** on Saturday, March 29, 2008 at 6:37pm.

log4(x-9)=2

Answer:

x-9=4^2

x-9=16

x=11

log4(z)+log4(z-3)=1

Answer:

z+z-3=1

2z=4

z=2

Thanks for checking my work.

- Algebra II -
**Damon**, Saturday, March 29, 2008 at 6:50pmAnswer:

x-9=4^2

x-9=16

x=11 BUT 16 PLUS 9 = 25

log A + log B = log (A+B) !!!!

log4 (z^2 - 3 z ) = 1

z^2 - 3 z = 4^1 = 4

z^2 -3 z -4 = 0

(z-4)(z+1) = 0

z = 4 or -1

- Typed your error by mistake -
**Damon**, Saturday, March 29, 2008 at 6:51pmlog A + log B = log (A*B) !!!!

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