Some signs would have made life easier at this end.
(3x + 9)(x + 9) is a possibility, as is (3x - 9)(x - 9)
81.
(3x - 30)(x + 8) can also simplify to 3(x - 10)(x + 8)
3x2-27 is equal to -21.
If you mean: 9x2-36x+16 then it is not a perfect square because its discriminant is greater than zero
-8x + 3x2 - 3
3x2 + 36x + 81 = 3(x2 + 13x + 27)
3x2 + 36x + 81 = 3(x2 + 12x + 27) = 3(x + 3)(x + 9), which are its prime factors; or, if you prefer, 3x2 + 36x + 81 = (3x + 9)(x + 9), which is also accurate. You may easily verify these results by multiplying back.
(3X + 9) (X + 9)
90720^2=8230118400
4x2-36x+81 (2x-9)(2x-9)
4x2 - 36x + 81 = 4x2 - 18x - 18x +81 = 2x(2x - 9) - 9(2x - 9) = (2x - 9)2
The expression is likely 4x2 - 36x +81 which is the same as (2x - 9)(2x - 9) or (2x - 9)2
-3x2+10x-3 -(3x2-10x+3) -(3x-1)(x-3)
3x2 + 10x + 3 = (x + 3)(3x + 1).
The prime power factorization of 81 is 34.
find the prime factorization to the number 81
If that's + 81, the answer is (2x - 9)(2x - 9) or (2x - 9)2 If that's - 81, it gets ugly in a hurry.