5x + 3 - 4 + 4x = 9x -1
-4
9x squared plus 16 = 0 factored is plus and minus 4/3 i.
9x-4 = 7x+8 9x-7x = 8+4 2x = 12 x = 6
4 + 8x
minus 4 plus 9 = 5, so 5x
As written, -5x + 9x = 4x 4x - 4 = 4(x - 1) If that's -5x2 + 9x - 4, that factors to -(x - 1)(5x - 4)
5x2 + 9x + 4 = (x + 1)(5x + 4).
(5x+4)(9x+9) FOIL First (5x*9x=45x**2) Outside (5x*9=45x) Inside (4*9x=36x) Last (4*9=36) 45x**2+45x+36x+36 45x**2+81x+36 9(5x**2+9x+4x)
5x + 3 - 4 + 4x = 9x -1
-4
9x + 5 = 5x + 179x + 5 - 5x = 179x - 5x = 4x5-4x=1717-5=1212 divided by 4 = 3x=3
-5x2+9x-4 -5x2+9x+-4 Factors of -20 that add to equal 9 are -5 and-4 -5x2+5x+4x+-4 -5x(1x+1) + 4x(1+-1x)
It is -9x plus 5.
x=2/3
5x + 3 - 4 + 4x = 9x -1
9x-5x-2x = -4 2x = -4 x = -2