mariamkhurram43 mariamkhurram43
  • 11-05-2018
  • Mathematics
contestada

(K-4)(k+4)=0 quadratic equation

Respuesta :

gmany
gmany gmany
  • 12-05-2018
[tex](k-4)(k+4)=0[/tex]

use:
[tex]a^2-b^2=(a-b)(a+b)[/tex]

[tex]k^2-4^2=0\\\\k^2-16=0\ \ \ \ |+16\\\\k^2=16\to k=\pm\sqrt{16}\\\\\boxed{k=-4\ \vee\ k=4}[/tex]

Other method:

[tex](k-4)(k+4)=0\iff k-4=0\ \vee\ k+4=0\\\\\boxed{k=4\ \vee\ k=-4}[/tex]
Answer Link

Otras preguntas

a pool is filled at a rate of 30 gal/min. What is the rate in mL per second?
Plz help me with Spanish nouns
What is 56:80 in lowest terms
What exist in our civilization now that will be an artifact someday and what makes it important enough to be an artifact?
which is the closest definition of a mind body connection
3feet to 8yards what is the simplist fraction
Hey what is 1002+1002
which statements regarding African Americans in crime is verified by criminal statistics
what is 1.8 repeating, rounded to the nearest hundredth?
Someone please help me in this homework