To complete squares, she must use, in order:
- Third step.
- First step.
- Fourth step.
<h3>Which steps could she use to solve the quadratic equation?</h3>
Here we have the quadratic equation:
There are some ways of solving this, the first approach is completing squares, where we can write:
Here we add and subtract 9 to complete squares and not change the equation. Here we used the third step only.
Now we just complete squares to get:
Where the first and fourth steps are also used.
If you want to learn more about quadratic equations:
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