-6 + 4x + (9-2x) = -6 + 4x + 9 - 2x = [ 3 + 2x ]
2x = -x +9
2x + 9 = 6x + 1 9 - 1 = 6x - 2x 8 = 4x x = 2
(2x - 9)(2x - 9) or (2x - 9)2
If: x+9+5x = 21+2x Then: x = 3
-6 + 4x + (9-2x) = -6 + 4x + 9 - 2x = [ 3 + 2x ]
6x + 9 + 2x = 8x + 9
2x
2x = -x +9
6 + 2x = 5x + 9 , 6 - 9 = 5x - 2x , -3 = 3x , x = -1
2x + 9 = 6x + 1 9 - 1 = 6x - 2x 8 = 4x x = 2
x = 7
6x - 9 + 2x + 1 = 8x -8
4x2 - 36x + 81 = 4x2 - 18x - 18x +81 = 2x(2x - 9) - 9(2x - 9) = (2x - 9)2
(2x - 9)(2x - 9) or (2x - 9)2
(2x - 9)(2x - 9) or (2x - 9)2
-2x^4+16 +2x^4+9-3x^5=-3x^5+25. There is no "answer" because there is no equation.