Question

Timothy evaluated the expression using x = 3
and y = –4.

xy-2
3x2y−4

Answer 1

the expression xy-2, when x=3 and y= -4, becomes (3)(-4)-2, or -14 (answer)

the expresion 3x^2*y - 4 becomes 3(3)^2*(-4) - 4, or 27(-4) - 4, or -108 - 4 = -112 (answer)

Leave Timmy out of this, since it seems he didn't really do anything. ;)