Question

if x=2,y=(-1),z=(-2) evaluate x²-3y²+4z³​

Answer 1

Answer:

33

Step-by-step explanation:

Given ,

• x = 2
• y = -1
• z = (-2)

So , x² - 3y² + 4z³

= 2² - 3 × (-1)² +4 × (-2)³

= 4 - 3 + 4 × 8

= 1 + 32

= 33

Answer 2

Answer:

Step-by-step explanation:

If we substitute this we get ,

2² -3*-1² +4*-2³

= 4 -3 *1 + 4*-8

= 4 -3 -32

= 4-35 = -31