-x - 2 + 15x = 14x - 2 = 2(7x - 1)
It is: 3x^2 +15x +12
15x2 + 2x - 56 = 15x2 + 30x - 28x - 56 = 15x(x + 2) - 28(x + 2) = (15x - 28)(x + 2)
-15x=-5*3x+2 -15x=-15x+2 +15x +15x ----------------- 0=2
6x-2=x+135x=15x=3
-x - 2 + 15x = 14x - 2 = 2(7x - 1)
-3x + 6 + 15x =11x + 8 ie -3x + 15x - 11x = 8 - 6 ie x = 2
It is: 3x^2 +15x +12
15x2 + 2x - 56 = 15x2 + 30x - 28x - 56 = 15x(x + 2) - 28(x + 2) = (15x - 28)(x + 2)
x2+15x+14 = (x+1)(x+14)
-15x=-5*3x+2 -15x=-15x+2 +15x +15x ----------------- 0=2
6x-2=x+135x=15x=3
15x
It's an equation. If you want to solve it for x, you can do so as follows: x2 + 15x = 30 x2 + 15x + (15/2)2 = 30 + (15/2)2 (x + 15/2)2 = 30 + 225/2 x + 15/2 = ± √(285/2) x = (-15 ± √570) / 2
x + 10
x + 5
18x2 + 15x + 2 = (3x + 2)(6x + 1)