SOLUTION: 16x^2-36=? 9x^2+81=?

Question 75945: 16x^2-36=?
9x^2+81=?
Answer by funmath(2933) (Show Source): You can put this solution on YOUR website!
Are you supposed to be factoring or solving for x?
16x^2-36=?
This is the difference of perfect squares the rule for that is .

:
9x^2+81=?
This is the sum of perfect squares and is prime. It can't be factored or solved unless you have started using the complex number system.
:
If you have started using complex numbers or need these solved for x let me know.
Happy Calculating!!!
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