2x - 5 - 4x + 8= 2x - 4x - 5 + 8= -2x + 3
(2x - 3)(4x + 9)(2x + 3) = (2x - 3)(2x + 3)(4x + 9) = [(2x)^2 - (3^2)](4x + 9) = (4x^2 - 9)(4x + 9) = (4x^2)(4x) + (4x^2)(9) - (9)(4x) - (9)(9) = 16x^3 + 36 x^2 - 36x - 81
4x - 3 = 2x + 54x - 2x = 5 + 32x = 8x = 8/2x = 4To check:4(4) - 3 = 132(4) + 5 = 13
2x+17 = 4x-3 2x-4x = -3-17 -2x = -20 Answer: x =10
5x + 3 - 4 + 4x = 9x -1
2x - 5 - 4x + 8= 2x - 4x - 5 + 8= -2x + 3
Simplify 4x + 3 = 2x + 8 2x = 5 x =2½
4x + 3 = -3 + 2x + 14 2x + 3 = -3 +14 2x + 3 = 11 2x = 8 x=4
You should probably combine like terms. For example, look below for an explanation: 2x - 3 = 4x + 5 + 3 + 3 ----------------- 2x = 4x + 8 -4x -4x ----------------- -2x = 8 ---- --- -2 -2 ------------------ x = -4
(2x - 3)(4x + 9)(2x + 3) = (2x - 3)(2x + 3)(4x + 9) = [(2x)^2 - (3^2)](4x + 9) = (4x^2 - 9)(4x + 9) = (4x^2)(4x) + (4x^2)(9) - (9)(4x) - (9)(9) = 16x^3 + 36 x^2 - 36x - 81
4x - 3 = 2x + 54x - 2x = 5 + 32x = 8x = 8/2x = 4To check:4(4) - 3 = 132(4) + 5 = 13
If that's - 4x, the answer is (2x + 3)(2x - 5) If that's + 4x, the answer is (2x - 3)(2x + 5)
2x+17 = 4x-3 2x-4x = -3-17 -2x = -20 Answer: x =10
5x + 3 - 4 + 4x = 9x -1
2x = 4x + 3 -2x = 3 x = -3 / 2
X= -8
1)add 5 to each side ,2x+8=4x 2)subtract 2x from each side, 8=2x 3) divide each side by 2, x=4