Tìm x biết a,(x-3)(x^2+3x+9)-x(x-4)(x+4)=21 b,(x+2)(x^2-2x+4)-x(x^2+2)=4 c,(x+2)(x^2-2x+4)-x(x-3)(x+3)=26 d,(4x+1)(16x^2-4x+1)-16x(4x^2-5)=17 e,(x-3)(x^2+3x+9)-(3x-17)=x^2-12 f,(4x^2+2x+1)(2x-1)-4x(2x^2-3)=23

Data for the height of a model rocket launch in the air over time are shown in the table. darryl predicted that the height of the rocket at 8 seconds would be about 93 meters. did darryl make a good prediction? yes, the data are best modeled by a quadratic function. the value of the function at 8 seconds is about 93 meters. yes, the data are best modeled by a linear function. the first differences are constant, so about 93 meters at 8 seconds is reasonable. no, the data are exponential. a better prediction is 150 meters. no, the data are best modeled by a cubic function. a better prediction is 100 meters.