# Cora Alexander

Precalculus teacher | Verified Expert

Greetings! I'm a passionate educator specializing in Precalculus, equipped with a degree from the University of Nebraska at Omaha. My journey in academia has honed my skills to simplify complex mathematical concepts. With a commitment to fostering a positive and engaging learning environment, I'm here to guide you through the intricacies of Precalculus. Let's embark on this mathematical adventure together, where every question is an opportunity for growth and understanding.

## Questions

How do you simplify #(-1-6i)/(5+9i)#?

How do you find the domain, x intercept and vertical asymptotes of #f(x)=lnx+2#?

How do I find the limit of a polynomial function?

How do you identify the vertex, focus, directrix and the length of the latus rectum and graph #y=x^2-12x+20#?

How do you long divide #(8a^2 - 30a + 7) div (2a - 78)#?

How do you find the inverse of #p(x)=x^3-3x^2+3x-1#?

How do you solve #(\frac { 1} { 81} ) ^ { 6x + 2} = 9^ { 2x ^ { 2} + 12}#?

The third term of an arithmetic sequence is 14, and the ninth term is -1. How do you find the first four terms of the sequence?

What are the asymptotes for #g(x)=5^x#?

How do you calculate # ln 23#?

What is the area of a rectangular room with a length of 5 -3i and a width of 2i?

How do you find the inverse of #f(x)=3^(x-1)-2#?

How do you find vertical, horizontal and oblique asymptotes for #f(x) = (3x^2+2x-1)/( x^2-4)#?

How do you divide #(6x ^ { 3} - 19x ^ { 2} + 16x - 4) -: ( x - 2)# by synthetic division?

Determine the first and last terms of an arithmetic series with 50 terms, a common difference of 6, and a sum of 7850. Help?

How do you solve #x^3+2x^2-4x-8>=0# using a sign chart?

How do you write the polynomial function with the least degree and zeroes i, 2 - √3?

What is the limit as #x# approaches 0 of #tanx/x#?

How do you find the vertical, horizontal and slant asymptotes of: #f(x)= (4x^2+ 4x-24)/(x^4- 2x^3 - 9x^2+ 18x)#?

Let #I# is identity matrix sized #3xx3# and #J# matrix sized #3xx3# which all the entry is 1. Let #A# is matrix sized #6xx6# which is wrote in block matrix #A=((I,J),(0,0))#. How to determine the base of zero space of #A# ?