3x^4*x^8-x^10*x^4
Original formula = 3x ^ (4 + 8) - x ^ (10 + 4)
=3x^12-x^14
X-8 molecule 3x = 10
x-3x/8=10
8x/8-3x/8=10
-5x/8=10
-5x=80
x=-16
3x + 4 = 40 to solve the equation
3X+4=40
3x=40-4
3x=36
x=12