QUADRATIC FUNCTIONS Solving Quadratic Equations (Page 4 of 5)

Enter the left side of the equation. The 0= is already provided. Whatever value is currently stored in the variable x will be displayed initially. Usually, this value will NOT be a solution yet.

 CLEAR key.

 X,T,theta,n key. x-squared key. Minus key. 2 X,T,theta,n key. Minus key. 7 ENTER key.

 Calculator screen image. Calculator screen image.

Now enter a guess for x that is near the left x-intercept. We will use -2. Do not press ENTER! Leave the cursor on this line and press ALPHA SOLVE.

 Negation key. 2 ALPHA SOLVE key. Calculator screen image.
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