Homework Help

Equation RootsFind the roots of the equation x^2-5x+6=0.

user profile pic

lillyan | Student, Undergraduate | eNoter

Posted June 4, 2011 at 1:52 AM via web

dislike 0 like
Equation Roots

Find the roots of the equation x^2-5x+6=0.

1 Answer | Add Yours

user profile pic

giorgiana1976 | College Teacher | Valedictorian

Posted June 4, 2011 at 4:19 AM (Answer #2)

dislike 0 like

We'll apply the quadratic formula

The original equation is: x^2-5x+6=0

x1 = [-b + sqrt(b^2 - 4ac)]/2a

We'll identify the coefficients:

a = 1

b = -5

c = 6

b^2 - 4ac = (-5)^2 - 4*1*6 = 25 - 24

sqrt(b^2 - 4ac) = sqrt(25 - 24)

sqrt(b^2 - 4ac) = 1

We'll substitute in the formula:

x1 = [-(-5) + sqrt(25 - 24)]/2

x1 = (5+1)/2

x1 = 3

x2 = (5-1)/2

x2 = 2

The roots of the equation are {2 ; 3}.

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes