Finding Solutions to a Trinomial

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Taught by mrbrianmclogan
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Part of video series
Meets NCTM Standards:
Lesson Summary:

In this lesson, the instructor teaches how to find the solutions to a given trinomial. To do this, they isolate the variable by factoring the quadratic equation. By using a quadratic form, they multiply the quadratic coefficient and the constant and find two numbers that multiply to give the constant and add to give the linear coefficient. They then use these two numbers to group the quadratic equation, factor it out, and solve for x. The final solutions are x equals one and x equals negative one-third.

Lesson Description:

Find the solutions to the given trinomial

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Questions answered by this video:
  • Solve 4x²+4x-15=0