Solving quadratic equations using the formula

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GCSE Grade: A

Solving quadratic equations using the quadratic formula. Leaving answers in surd form or as decimals. Including rearranging equations into the correct form.

The following examples are included in the video:

  • Solve x2 – 4x + 2 = 0, giving answers to 2 decimal places
  • Solve x2 + 8x + 5 = 0, giving answers in surd form
  • Solve 3x = 20 – x2, giving answers to 2 decimal places

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2 Comments
  1. gcsemaths student says:
    Posted November 7, 2011 at 8:15 PM

    where can i find the correct answers? (:

    Reply
    • Mr D (admin) says:
      Posted December 13, 2011 at 7:10 PM

      Hi. The answers for each of the questions shown are in the video. I hope that has been helpful.

      Reply
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