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math algebra

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Part 1: Which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring and why?

1. −b
2. b2 − 4ac
3. 2a
Part 2: Create your own quadratic equation. Using complete sentences, and your answer from part 1, determine whether your equation can be solved by factoring.

  • math algebra - ,

    If b^2 - 4ac is a perfect square, then the roots are rational, and the quadratic can be factored.

  • math algebra - ,

    b^2 - 4ac ==> this is the discriminant
    note: for real numbers a, b and c,,
    *if b^2 - 4ac < 0 : 2 imaginary roots
    *if b^2 - 4ac = 0 : 1 real and distinct root
    *if b^2 - 4ac > 0 : 2 real and distinct roots

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