因为a,b满足a^2-a-9=0,b^2-b-9=0(a不等于b),所以 a+b=1
ab=-9
a^3+7b^2+3b-66
=a(a+9)+7b^2+3b-66
=a^2 +9a +b^2+6b^2+3b-66
=(a+b)^2-2ab+9a+6(b+9)+3b-66
=1-(-18)+9(a+b)-12
=19+9-12
=16
因为a,b满足a^2-a-9=0,b^2-b-9=0(a不等于b),所以 a+b=1
ab=-9
a^3+7b^2+3b-66
=a(a+9)+7b^2+3b-66
=a^2 +9a +b^2+6b^2+3b-66
=(a+b)^2-2ab+9a+6(b+9)+3b-66
=1-(-18)+9(a+b)-12
=19+9-12
=16