msmith16
msmith16 msmith16
  • 04-09-2018
  • Mathematics
contestada

Find the number of real number solutions for the equation. x^2+9x+20=0
A.) Can't be determined by graph
B.) 1
C.) 2
D.) 0

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JulianVella
JulianVella JulianVella
  • 04-09-2018
x^2+9x+20 = 0
factorises to (x+5)(x+4)=0
so x = -5 or -4
Therefore answer is C.) 2
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