8x-4
(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
2x + 4 = 2 2x = -2 x = -1
int[e(2X) +e(- 2X)] integrate term by term 1/22 e(2X) - 1/22 e(- 2X) + C (1/4)e(2X) - (1/4)e(- 2X) + C ====================
1/2x + 13 = 9 To solve this: Subtract 13: 1/2x = -4 Multiply by 2x: 1 = 2x * -4 Divide by -4: 1/-4 = 2x Divide by 2: (1/-4)/2 = x Work it out: 1/-4 = -0.25 -0.25/2 = -0.125 -0.125 = -1/8th x = -0.125 or 1/8th
If you mean 2x+4(7x-1) then 2x+28x-4=30x-4=2(15x-2) If you mean 2x+4(7x)-1 then 2x+28x-1=30x-1
4 + 32x3 = 4*(1 + 8x3) = 4*(1 + 2x)*(1 - 2x + 4x2) which cannot be factorised further.
If 3X - 4 ------ = 0 1-2X-4 So 3X - 4 ----- = 0 [ x (2X-3) ] 2X-3 3X-4 = 2X-3 [ -2X ] X - 4 = -3 [ +4 ] X= 1
8x-4
4x + 1 = 2x + 5 4x + 1 - 2x = 2x + 5 - 2x 2x + 1 = 5 2x + 1 - 1 = 5 - 1 2x = 4 2x/2 = 4/2 x = 2
2x-4y=4 -4y=-2x+4 y=1/2x-1 Slope is 1/2 (.5)
(3x+1)(2x+4) = 6x2+4+2x+12x = 6x2+14x+4
(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
2x + 4 = 2 2x = -2 x = -1
-3
int[e(2X) +e(- 2X)] integrate term by term 1/22 e(2X) - 1/22 e(- 2X) + C (1/4)e(2X) - (1/4)e(- 2X) + C ====================
4x2 + 8x + 4 = 4 (x2 + 2x + 1) = 4 (x + 1)2