log(base 2)(2x + 1) + log(base 2)(x - 1) = log(base 2)(x + 2

[SMS]

i could use help with this log problem

Solve,

log(base 2)(2x + 1) + log(base 2)(x - 1) = log(base 2)(x + 2)

 

[mmm4444bot]

On the lefthand side, combine the sum of logarithms into a single logarithm, using this property:

log_2(A) + log_2(B) = log_2(A*B)

You will then have an equation of the following form.

log_2(some quadratic polynomial) = log_2(the linear polynomial)

Since these two logarithms are equal, the polynomials must be equal. Write this equality, and solve for x using the Quadratic Formula.

If you need more help, then please show any work that you can, and try to say something about why you're stuck, so that people might determine where to continue helping you.