Question

utilize x=2 y=3 z=1

a) 3x²+3y

b)2x-4z+2y²

c) 5x³-4y+3z²

Answer 1

A) 3x²+3y
Substitua os termos
3.(2)² + 3.3
3.4 + 9
12+9
R=21

B) 2x-4z+2y²
2.2 - 4.1 + 2.(3)²
4 - 4 + 2. 9
4-4+18
R=18

C) 5x³ -4y+3z²
5.(2)³ - 4.3+3.(1)²
5.8 - 12+3.1
40 -12+3
40-15
R=25