The area of square ABCD is 7cm2 show that x2 + 4x = 3

Provide an example of a trigonometric function and describe how it is transformed from the standard trigonometric function f(x) = sin x, f(x) = cos x, or f(x) tan x using key features.

Find three consecutive numbers such that the sum of one-fourth the first and one-fifth the second is five less than one-seventh the third

In the diagram, gef and hef are congruent. what is the value of x