Final answer:
A quadratic equation has the form ax² + bx + c = 0 and is solved using the quadratic formula. By substituting the specific coefficients 'a', 'b', and 'c' into the formula, we can find the values of 'x' that satisfy the equation.
Step-by-step explanation:
The student has presented several quadratic expressions and is likely asking for help in understanding quadratic equations. The general form of a quadratic equation is ax² + bx + c = 0. To solve for 'x', you can use the quadratic formula, which is x = (-b ± √(b² - 4ac)) / (2a). You would substitute the coefficients 'a', 'b', and 'c' from your equation into this formula to find the values of 'x' that satisfy the equation.
For example, with the quadratic expression A. -3x² + 11x - 3, if we were solving it as an equation (A = 0), we would identify a = -3, b = 11, and c = -3. Then, we would substitute these values into the quadratic formula to find the solutions for x.