SOLUTION: How to solve the following problem? d^2 - d - 30 = 0

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: How to solve the following problem? d^2 - d - 30 = 0       Log On


   

Question 890640: How to solve the following problem?
d^2 - d - 30 = 0

Answer by algebrahouse.com(1659) About Me  (Show Source):
You can put this solution on YOUR website!
dē - d - 30 = 0
(d - 6)(d + 5) = 0 {factored into two binomials}
d - 6 = 0 or d + 5 = 0 {set each factor equal to 0}
d = 6 or d = 5 {solved each equation for d}

For more help from me, visit: www.algebrahouse.com