The expression is likely 4x2 - 36x +81 which is the same as (2x - 9)(2x - 9) or (2x - 9)2
(2x - 9)(2x - 9)
(3X + 9) (X + 9)
3x2 + 36x + 81 = 3(x2 + 13x + 27)
(2x - 9)(2x - 9) or (2x - 9)2
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
(2x - 9)(2x - 9)
81.
(3X + 9) (X + 9)
3x2 + 36x + 81 = 3(x2 + 13x + 27)
(2x - 9)(2x - 9) or (2x - 9)2
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.
Using the quadratic equation formula to find the answer: If: (2x -9)(2x-9) = 0 Then: x = 9/2 and also x = 9/2 (they both have equal roots) Check that your answer is correct by multiplying out the brackets which should bring you back to 4x2-36x+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.
4x2-81
(2x - 9)(2x - 9) or (2x - 9)2