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ashleyb Group Title

solve 4x^2=12x+40

  • 2 years ago
  • 2 years ago

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  1. campbell_st Group Title
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    rewrite the equation 4x^2 -12 - 40 = 0 take 4 as a common factor 4(x^2 - 3x - 10) = 0 factorise the brackets 4(x - 5)(x + 2) = 0 I'll leave you to finish solving the question.

    • 2 years ago
  2. ashleyb Group Title
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    are the answers -5 and 2?

    • 2 years ago
  3. campbell_st Group Title
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    nearly... reverse the signs on your answers

    • 2 years ago
  4. sarah43 Group Title
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    |dw:1343075248668:dw|

    • 2 years ago
  5. ashleyb Group Title
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    oh so positive 5 and -2...thankyou for ur help

    • 2 years ago
  6. campbell_st Group Title
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    thats it

    • 2 years ago
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