"Exactly one real solution" means the discriminant must equal zero ( Solve for :
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If the equation is abstract and the answer choices are numbers, start with the middle answer (C) and plug it back into the original word problem. It is often faster than solving algebraically. "Exactly one real solution" means the discriminant must
We are given that the absolute difference between the solutions is 1: We are given that the absolute difference between
For one real solution, the discriminant must equal zero: (b^2 - 4ac = 0).
Questions often present a system of equations where a line and a quadratic intersect at a single point, forcing you to solve for a variable.