The inverse of subtraction is

The function ƒ is defined by ƒ(x) = (x + 3)(x + 1). the graph of ƒ in the xy-plane is a parabola. which interval contains the x-coordinate of the vertex of the graph of ƒ?

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Evaluate cos2θ for cosθ = square root of 3/2