Question

9+ x-2x​2 , 6-x+2x​2+3x3 ,4x​3-x-8 add

Answer 1

Answer:

x = 20

Step-by-step explanation:

=> 9 + x - 2×2 (+)

6 - x + 2×2+3×3 (+)

4 × 3 -x - 8

=> 9 + x - 4

6 - x + 4 + 9 = 6 - x + 13

12 - x -8

=> x +5

-x + 19

-x - 4

=> x +5-x+19-x-4 = - x + 20

-x = - 20

x = 20