Need the following in C++. Thank you!

Lab Assignment #1 Activities 1. For a quadratic expression such as: ax2 bx c a real root is any double number x such that: For example, the quadratic expression 2x? 8x 6 has one of its real roots at x --3, because substituting x 3 in the formula 2x2 8x 6 yields the value: 2 (-32) 8 (-3) 60 If a is nonzero, and b> 4ac, then the two real roots, x1 and x2, can be calculated as follows: h24ac x2 = 2a a) What is the prototype for a function that calculates and returns these real roots from the given variable values a, b, and c? (2 points)