(4x+1)^2 - (4x+3)(4x-3) = 6x-2
16x^2+8x+1-(16x^2-9) = 6x-2
16x^2+8x+1-16x^+9 = 6x-2
8x+10 = 6x-2
8x-6x = -2-10
2x = -12
x = -6
^ это степень
(4x+1)^2 - (4x+3)(4x-3) = 6x-2
16x^2+8x+1-(16x^2-9) = 6x-2
16x^2+8x+1-16x^+9 = 6x-2
8x+10 = 6x-2
8x-6x = -2-10
2x = -12
x = -6
^ это степень