precal hw

8. Write the following expression a a sum or difference of logs without exponents. In x ( x - 2)21 Vx2 + 5 9. Write In(x + 1) + In(x - 1) - 2In(x2+ 3) as a single log 10.Solve the following equations exactly. a) e2x + 7ex - 3=0 b) 23x- 1 = 1 c) log ( 4 - x) + log(x + 2) = log (3 -2x) 11.For the parabola with standard equation (x + 4)2 = -4(y + 2) find the a) Vertex b) Focus c) Directrixd) x - intercepts (if any) ely - intercepts (if any) f) Graph 12.Determine whether you have an ellipse or hyperbola by completing the square on the equation 16x2 + 25y2 + 32x - 150y = 159 Graph (clearly label the vertices and center)