∴ q？ = 3q - 10，q^4=sup2 - 10q

Let h (x) = bx&; Sup2+cx+d (b, c, d are rational numbers, b≠0)

h(a)= b(q^4+q&； sup 2+4+2q & amp； sup 3-4q & amp； sup 2-4q)/4+c(q & amp； sup2+q-2)/2 + d = q

Introduce simplification to get CQ &；; sup 2/2+(c/2-2 b- 1)q+(d-c-4b)= 0

Q is irrational, and b, c, d C and d are rational.

∴c = 0，c/2 - 2b - 1 = 0，d-c-4b = 0

Get d = -2.

∴h(0) = d = -2