4t + 2u2 - u3 ; t=2 u=1
( i can't input exponents; the second '2' in 2u2 is an exponent, and the '3' in u3 is, too.)

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126

What is the length of the segment, endpoints of which are intersections of parabolas y=x2? 11 4 x? 7 4 and y=? 7 8 x2+x+ 31 8 ?