4n-20n+25
(2n + 7)(2n + 7)
9m2+ 9mn- 4n2
(4n + 3)(n + 6) so n is either -3/4 or -6
4n2 + 5m2 - 5mn
4n2 is one expression. You need at least two to find a GCF
8n + 4n2 -8n
The expression is 36n^2 - 81.
n² - 10n + 24 = 0 You need two numbers that multiply to equal 24. They have to add to equal -10. -6 times -4 is 24 -6 plus -4 is -10 Your answer is (n - 6)(n - 4).
sqrt(4n2) = 2n
2mn + 4n2 and 5m2 - 7mn
4n2