SOLUTION: the question is: Factor the polynomial completely. If the polynomail cannot be factored, write PRIME. z^2 - 49 Can anyone help?

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: the question is: Factor the polynomial completely. If the polynomail cannot be factored, write PRIME. z^2 - 49 Can anyone help?       Log On


   

Question 21369: the question is: Factor the polynomial completely. If the polynomail cannot be factored, write PRIME.
z^2 - 49 Can anyone help?
Answer by venugopalramana(3286) About Me  (Show Source):
You can put this solution on YOUR website!
Z^2-49
=Z^2-7^2.....USING THE FORMULA (X+Y)(X-Y)=X^2-Y^2..WE GET
=(Z+7)(Z-7)