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I would divide everything by two. Then I would add 7/2 from both sides which would cancel out the -7/2. That would give me 8 where the 9/2 is. Then I would square root both sides and get 2 square roots of 2. That would be using completing the square.
5 days ago · Solving quadratic equations by completing the square is a key technique you’ll often encounter in math, whether you’re studying at school or university. This method is especially useful because it helps simplify equations, making them easier to solve and analyze.
3 days ago · To complete the square for the quadratic equation \(ax^2 + bx + c = 0\), we follow these steps: Divide all terms by \(a\) (if \(a \neq 1\)). Rearrange the equation to form \(x^2 + \frac{b}{a}x = -\frac{c}{a}\). Add \(\left(\frac{b}{2a}\right)^2\) to both sides to complete the square.
1 day ago · This lesson explains how to complete the square.
- 16 min
- Mr. Oudai
3 days ago · This section introduces the method of trigonometric substitution for integrating functions that involve square roots of quadratic expressions. It explains how to replace variables using trigonometric …
4 days ago · Completing the square: This video goes through examples of how to complete the square.
3 days ago · This DESMOS resource has 10 questions that checks students’ understanding of completing the square and then solving. The resource is great for formative assessment and will give the teacher feedback in real time on the understanding of the whole class.
