The graph of the given quadratic equation is attached. The zeros of the function is -5 and 4.
The graph of the given function is drawn with the help of graphing calculator.
To find the zeros of the function we can equate the function to 0.
2x² + 2x – 40 = 0
Take 2 common from the equation
x² + x – 20 = 0
x² + 5x - 4x - 20 = 0
x(x + 5) - 4(x + 5) = 0
(x - 4 )(x + 5) = 0
x = 4, x = -5
Hence, the zeros of the given equation are 4, -5
--The given question is incomplete, the complete question is
"Use the graphing calculator to graph the quadratic function y = 2x² + 2x – 40. What are the zeros of the function?"