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Find the value of c that completes the square

2,110 views · Published 7 June 2012 · 1:31 · Indexed 27 October 2026

Channel: Brian McLogan · 2012 · Education

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👉 Learn how to find the value c that completes the square in a quadratic expression. A quadratic expression is an expression whose highest exponent in the variable(s) is 2. It is of the form ax^2 + bx + c where a, b, and c are constants. The value c that we create is what will turn our quadratic expression into a perfect square trinomial. A perfect square trinomial is an expression that can be expressed in the form (x + a)^2. 

Given a quadratic expression, ax^2 + bx + c, the value of c that completes the square in the quadratic expression is given by c = (b/2)^2.

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Organized Videos:
✅Completing the Square
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMpfUn-UbbSKAHe7GOxGShBk
✅Find the Value C that Completes the Square
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMqmxsvmZap_8RKYseOPTCjx
✅Standard to Vertex Form by Completing the Square
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMq-1D6604jY8aFUjYuk4Kkh
✅Find the Vertex by Completing the Square
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMp5mvVW2CmsEPpdn6dvPeBk

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