Question

Which of the following statements are true about the graph of the function f(x)=(x+5)(x-3)

Answer 1

x * x = x^2

x * -3 = -3x

5 * x = 5x

5 * -3 = -15

x^2 -3x + 5x -15

x^2 + 2x -15

This function is a quadratic function, with an upwards parabola.