Normal Academic Math Website

2.2: Solving quadratic equations by completing the square

Lesson Objective(s):

You should be able to

use completing the square to solve quadratic equations

IMPORTANT:

Before completing the square, you must always check that the coefficient of x square term is 1.

Completing the square with 2 terms

Completing the square with 3 terms

Solving quadratic equation in perfect square

Solving quadratic equation using completing the square and using calculator to check answer

Using calculator to check answer:

Time: 6:57 onwards

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