A mobile number consists of ten digits. The first four digits of the number are 9, 9, 8 and 7. The last three digits are 3, 5 and 5. The remaining digits are distinct and make the mobile number, the greatest possible number. What are these digits

±1, ±1/2, ±2, ±5, ±5/2, ±10

Step-by-step explanation:

move all the expressions to the left side of the equation.

-2x^9 + 3x^7 -11x -10 = 0

if a polynomial fuction has integer coefficients, then every rational zero will have the form p/q where p is a factor of the constant q is a factor of the leading coefficient.

p= ±1, ±2, ±5, ±10

q = ±1, ±2