radomes.openskiesproject.org
Anonymous Anonymous
  • 01-09-2016
  • Mathematics
Answered

Solve this equation using an algebraic method: (x + 4)( x - 4) = 9.


Please use your own answer :)

Verified Answer :

Anonymous Anonymous
  • 01-09-2016

\(\star \ (x + 4)( x - 4) = 9.\) 

\(\star \ x^2-4^2=9\)  \(Expand \ the \ given \ equation\) 

\(\star\)  \(x^2-16=9\) 

\(\star\)  \(x^2=9+16\)  \(Combine \ like \ terms\) 

\(\star\)  \(x^2=25\) 

\(\star\)  \(x= \sqrt{25}= \sqrt{5}\) 

\(\star\) \(x=5\)

Answer Link

Related Questions

Add the two expressions 4x3 and 2x6 Enter your answer in the box
Suppose that consumption depends on the interest rate how if at all does this alter the conclusions
Two bowling balls each have a mass of 69kgThey are located next to each other with their centers 218cm apartWhat gravitational force do they exert on each other
Select the best analogy 5 pt ursine bear a piscine porcine b dog canine c simian ape d leonine tiger
The importants of english our life
Why does the poet capitalize Moon and plead with the moon to shine through just one small crack
Amounts owed to suppliers for supplies purchased on account are defined as
If 0582 moles of zinc reacts with excess leadIV sulfate how many grams are zinc sulfate would be produced
What is the irony with regard to the rewards offered for pap and jim
Im completely lost in physics the Kinematics and dynamics units My exam is coming up If a biker travelling at 64ms sees biker B 34m ahead on the road travelling