Answered

Explore IDNLearn.com to discover insightful answers from experts and enthusiasts alike. Join our platform to receive prompt and accurate responses from experienced professionals in various fields.

what are the roots of the equation x^2+4x-16=0

Sagot :

OK so you need to use the quadratic formula with a=1, b=4, c=-16.
   
     −b±√b^2−4ac
x=  ------------------  
            2a   

      −(4)±√(4)^2−4(1)(−16)
x= -----------------------------
                 2(1)    
      
         −4±√80
x= ---------------
            2

Your final answer is:  x=−2+2√5 or x=−2−2√5
Panoyinidn
x² + 4x - 16 = 0
x = -(4) ± √((4)² - 4(1)(-16))
                     2(1)
x = -4 ± √(16 + 64)
                 2
x = -4 ± √(80)
             2
x = -4 ± 4√(5)
             2
x = -2 ± 2√(5)
x = -2 + 2√(5)    U    x = -2 - 2√(5)
Thank you for participating in our discussion. We value every contribution. Keep sharing knowledge and helping others find the answers they need. Let's create a dynamic and informative learning environment together. Discover the answers you need at IDNLearn.com. Thanks for visiting, and come back soon for more valuable insights.