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Press MATH. Then go down to the last option, which says "Solver...". Press Enter. If you do not see "eqn:0=" then press the up arrow until you do. Now type your quadratic equation in. It will automatically be set equal to zero. (Use the button to the left of ALPHA for a variable, or use a capital letter as your variable(s). Put the cursor over the value next to the variable you want to solve for. Then press ALPHA and then SOLVE (the ENTER key. Notice that SOLVE is written in green above the ENTER key.) You will get an answer. Type in other values next to the variable to solve for other possible answers. You will normally get the answer closest to the one that is next to the variable before you press solve.

Q: How do you solve a quadratic equation on a TI-84?

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The roots of the quadratic equation are the x-intercepts of the curve.

By using the quadratic equation formula

How you solve an equation that doesn't factor is to plug a quadratic equation's format; ax2+bx+c into the quadratic formula which is x=-b+square root to (b2-4ac)/2a.

There are different methods of using quadratic functions depending on the equation.

Using the quadratic equation formula:- x = 3.795831523 or x = -5.795831523

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It is used to solve quadratic equations that cannot be factored. Usually you would factor a quadratic equation, identify the critical values and solve, but when you cannot factor you utilize the quadratic equation.

The roots of the quadratic equation are the x-intercepts of the curve.

By using the quadratic equation formula

The quadratic formula is used to solve the quadratic equation. Many equations in which the variable is squared can be written as a quadratic equation, and then solved with the quadratic formula.

The quadratic formula cannot be used to solve an equation if the coefficient of the equation's x2-term is 0.

How you solve an equation that doesn't factor is to plug a quadratic equation's format; ax2+bx+c into the quadratic formula which is x=-b+square root to (b2-4ac)/2a.

The quadratic formula cannot be used to solve an equation if the coefficient of the equation x square term is what?

Because it's part of the quadratic equation formula in finding the roots of a quadratic equation.

The quadratic formula can be used to solve an equation only if the highest degree in the equation is 2.

a is the coefficient of the x2 term. If is a = 0, then it is no longer a quadratic - it is just a linear equation, and the quadratic formula will not work to solve it.

Pros: There are many real life situations in which the relationship between two variables is quadratic rather than linear. So to solve these situations quadratic equations are necessary. There is a simple equation to solve any quadratic equation. Cons: Pupils who are still studying basic mathematics will not be told how to solve quadratic equations in some circumstances - when the solutions lie in the Complex field.

There are different methods of using quadratic functions depending on the equation.