Which equation is not a polynomial. A.-sqrt(2)
B.-3x^2+xy-2y^2
C. x^/y +3xy -2y^2/x
D. sqrt(2a^2)-4xy-2x^2y^2
E.5x^-2 +x^-1 y-2

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 23 = 10x a. -1.93, 11.93 b. 1.93, -11.93 c. 1.93, 11.93 d. -1.93, -11.93

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did