SOLUTION: Need to solve the quadratic formula and state if there are no real roots or not for question #8 on page #588: X^2+9x+7=0 The help is greatly appreciated!

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Need to solve the quadratic formula and state if there are no real roots or not for question #8 on page #588: X^2+9x+7=0 The help is greatly appreciated!       Log On


   

Question 76454This question is from textbook Beginning Algebra
: Need to solve the quadratic formula and state if there are no real roots or not for question #8 on page #588:
X^2+9x+7=0
The help is greatly appreciated!
 This question is from textbook Beginning Algebra

Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
x^2+7x+9=0
using the quadratic equation we get:
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
X=(-7+-SQRT[7^2-4*1*9])/2*1
X=(-7+-SQRT[49-36])/2
X=(-7+-SQRT13)/2
X=(-7+-3.6)/2
X=(-7+3.6)/2
X=-3.4/2
X=-1.7 ANSWER.
X=(-7-3.6)/2
X=-10.6/2
X=-5.3 ANSWER.