Find the 20

Find the product and the sum of the roots of x2 + 3x - 9 = 0

Correct answer:

p =  -9
s =  -3

Step-by-step explanation:

x2 + 3x  9 = 0 a=1 b=3 c=9  p=c/a=(9)/1=9
s=b/a=3/1=3   Verifying Solution:  x2+3x9=0  x2+3x9=0  a=1;b=3;c=9 D=b24ac=3241(9)=45 D>0  x1,2=2ab±D=23±45=23±35 x1,2=1.5±3.354102 x1=1.854101966 x2=4.854101966  p1=x1 x2=1.8541 (4.8541)=9 s1=x1+x2=1.8541+(4.8541)=3

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