anonymous
  • anonymous
solve 4x^2=12x+40
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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campbell_st
  • campbell_st
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.
anonymous
  • anonymous
are the answers -5 and 2?
campbell_st
  • campbell_st
nearly... reverse the signs on your answers

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anonymous
  • anonymous
|dw:1343075248668:dw|
anonymous
  • anonymous
oh so positive 5 and -2...thankyou for ur help
campbell_st
  • campbell_st
thats it

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