Final answer:
Yes, x² + 5x - 3 = 0 is a quadratic equation.
Step-by-step explanation:
Yes, x² + 5x - 3 = 0 is a quadratic equation.
A quadratic equation is an equation of the form ax² + bx + c = 0 where a, b, and c are constants, and a ≠ 0. In this equation, x² is the quadratic term with coefficient 1, 5x is the linear term with coefficient 5, and -3 is the constant term.
To verify if an equation is quadratic, we check if the highest power of the variable is 2. Here, the highest power of x is 2, so it is indeed a quadratic equation.