8x-4
7x4=28
x equals 4
-2x^4+16 +2x^4+9-3x^5=-3x^5+25. There is no "answer" because there is no equation.
2x + x + 4 +2x = x + 20 5x + 4 = x + 20 5x - x = 20 - 4 4x = 16 x = 4
(7x4) + (4x7) = 28 + 28 = 56
A = 4 (7x4) + 8 = 36 (6x4) + 14 = 36
14
(3x+1)(2x+4) = 6x2+4+2x+12x = 6x2+14x+4
3x+56 = 2x+4 3x-2x = 4-56 x = -52
(4 + 2x) - (-2x + 1) = 13 + 6 4 + 2x + 2x -1 = 19 4x +3 = 19 4x = 19 - 3 4x = 16 therefore x = 16/4 x = 4
x^5+2x^4+4x^2+2x-3