new q

[hard]

Find the values of for which

[shinny]

The bullet is a multiply, otherwise it'll just look like 305^x. And yes, I'm pretty definite that's what he meant.

EDIT: On a second glance, uhhh...where's the equals sign...

[hard]

i'm soo shit at this. yes its a multiply sign and yes the x isn't meant to be next to the small two and damn forgot the = but does anyone have the answer?

[Flaming_Arrow]

if u meant



use then use quadradtic equation, then sub ur answer back to to solve for x

[Mao]

try:

Code: [Select]

[tex]
5^{2x} - 30 \cdot 5^{x} + 125 = 0
[/tex]


[hard]

if u meant



use then use quadradtic equation, then sub ur answer back to to solve for x

i tried but failed. can you show me how?

[TonyHem]

u^2-30U+125
(U-5)(u-25)
u = 5, u = 25
5^x = 5, 5^x = 25
x = 1 x = 2

[hard]

thanks tonyhem