Question

Let x = 4, y = 6, and z = 2. Evaluate 2xy+3z−8z4 .

Answer 1

2xy+3z-8z4
2(4)(6)+3(2)-8(2)4
8(6)+6-16(4)
48+6-64
54-64
-10

Answer 2

2xy+3z−8z^4
=2(4)(6)+3(2)−8(2)^4
= 48 + 6 - 128
= -74