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.
The factors of 81 are 1, 3, 9, 27, and 81. The factor pairs of 81 are 1 x 81, 3 x 27, and 9 x 9. The proper factors of 81 are 1, 3, 9, and 27, or if the definition you are using excludes 1, they are 3, 9, and 27. The prime factors of 81 are 3, 3, 3, and 3. Note: There is repetition of these factors, so if the prime factors are being listed instead of the prime factorization, usually only the distinct prime factors are listed. The distinct prime factor of 81 is 3. The prime factorization of 81 is 3 x 3 x 3 x 3 or in exponential form 34. 81 = 3*3*3*3 or 3^4.
If you mean: 9x2-36x+16 then it is not a perfect square because its discriminant is greater than zero
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
34 = 81