I don't understand this factorisation
a2+ 4a+3

Module 10 coordinate proof using slope and distance answers is quadrilateral abcd a parallelogram? explain how you know.

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years

What is the value of f(x) = 2.2 for f(-2)?