anonymous
  • anonymous
How many solutions does the following equations have? 1. –7x² + 6x + 3 = 0 2. –8x² – 8x – 2 = 0 Thanks in advance to all answers! :D
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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King
  • King
2 each
hoblos
  • hoblos
1) 2 solutions 2) a double solution
experimentX
  • experimentX
both equations are quadradic equations ... so at most they have two solutions, either both real or both imaginary

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King
  • King
both are quadratic equation and therefor cannot have more than 2 solutions........
anonymous
  • anonymous
both are quadratic equation and therefor cannot have more than 2 solutions........ so 2
experimentX
  • experimentX
in the latter case, it has only one solution .. .i.e two roots coincide with each other
anonymous
  • anonymous
for (1) , b^2 -4ac = 36-4(-7)(3) >0 therefore, 2 solutions for (2), b^2 -4ac =64-4(-8)(-2) =0 therefore, 1 repeated root

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