Answer:i hope it helps! Step-by-step explanation:To write the quadratic equations in standard form using as the variable with the given coefficients, we use the general form of a quadratic equation: . 1. For coefficients , , and :The quadratic equation in standard form is: 2. For coefficients , , and :The quadratic equation in standard form is: 3. For coefficients , , and :The quadratic equation in standard form is: 4. For coefficients , , and :The quadratic equation in standard form is: 5. For coefficients , , and :The quadratic equation in standard form is: