If f(x) = 2x^2 + 1, complete the following: a. f(-4)
b. f(-2)
c. f(0)
d. f(2)
e. f(4)

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?