SOLUTION: x^2+5x+2=0

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Question 736013: x^2+5x+2=0
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
x^2+5x+2=0
we use the formula method
compare with ax^2 +bx +c

a= 1 , b= 5 , c= 2

b^2-4ac= 25 + -8
b^2-4ac= 17
%09sqrt%28%0917%09%29=%094.12%09
x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29
x1=%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F%282a%29
x1=( -5 + 4.12 )/ 2
x1= -0.44
x2=%28-b-sqrt%28b%5E2-4ac%29%29%2F%282a%29
x2=( -5 -4.12 ) / 2
x2= -4.56
(-0.44,-4.56)