Final answer:
To prove the conditional, we can use the given statement "If x is a solution to the equation x^2 + 1.2 x 10^-2x - 6.0 x 10^-³ = 0, then x = -1." By assuming this given statement, we can show that x = -1 is a valid solution.
Step-by-step explanation:
To prove the conditional "x = -1 if x^2 + 1.2 x 10^-2x - 6.0 x 10^-³ = 0," we need to find a given statement that implies that x = -1. One possible given statement could be: "If x is a solution to the equation x^2 + 1.2 x 10^-2x - 6.0 x 10^-³ = 0, then x = -1." By assuming this given statement, we can work backwards to show that x = -1 is a valid solution to the equation.