Solution equation: 2x ^ 4-3x ^ 3-x ^ 2-3x + 2 = 0

Solution equation: 2x ^ 4-3x ^ 3-x ^ 2-3x + 2 = 0

Answer: 2x ^ 4-3x ^ 3-x ^ 2-3x + 2 = 0 (2x ^ 4-4x ^ 3) + (x ^ 3-2x ^ 2) + (x ^ 2-3x + 2) = 02 (X-2) x ^ 3 + (X-2) x ^ 2 + (x-1) (X-2) = 0 (X-2) (2X ^ 3 + x ^ 2 + x-1) = 0, so: X-2 = 0 or 2x ^ 3 + x ^ 2 + X-1 = 0 solution: x = 22x ^ 3 + x ^ 2 + X-1 = 0 (2x ^ 3-x ^ 2) + 2x ^ 2 + X-1 = 0 (2x-1) x ^ 2 + (2x-1)

To solve the equation 12x-1.8 = 4.2 2x of 3 + 3x of 4 = 340.6x = 7.2

12x—1.8＝4.2
12x=6
x=0.5
2X out of 3 + 3x out of 4 = 34
8x of 12 + 9x of 12 = 34
17x of 12 = 34
x=24
0.6x＝7.2
x=12