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# Use FACTORING to solve : x2 + x – 20

Use FACTORING to solve : x2 + x – 20 = 0

Use the QUADRATIC FORMULA to solve: 46 on p. 636

In this discussion, you will solve quadratic equations by two main methods: factoring and using the quadratic formula. Read the following instructions in order and view the MAT222 Week 4 Discussion Example to complete this discussion. Please complete the following problems according to your assigned number. (Instructors will assign each student their number.)

• For the factoring problem, be sure you show all steps to the factoring and solving. Show a check of your solutions back into the original equation.
• For the quadratic formula problem, be sure that you use readable notation while you are working the computational steps. Refer to the Inserting Math Symbols handout for guidance with formatting.
• Present your final solutions as decimal approximations carried out to the third decimal place. Due to the nature of these solutions, no check is required.
• Incorporate the following four math vocabulary words into your discussion. Use bold font to emphasize the words in your writing. Do not write definitions for the words; use them appropriately in sentences describing your math work.
• Factoring
• Completing the square
• Discriminant

Your initial post should be at least 250 words in length.

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