Question

evaluate each of the following expressions for x=2,y=-1 z=3
x³+y²+z²-xy-yz-zx​

Answer 1

Answer:

15

Step-by-step explanation:

×2−1

2

+3

2

−2(−1)−(−3)−3×2≈15

view step

428

8-1^{2}+3^{2}-2\left(-1\right)-\left(-3\right)-3\times 2\approx 15

8−1

2

+3

2

−2(−1)−(−3)−3×2≈15

view step

121

8-1+3^{2}-2\left(-1\right)-\left(-3\right)-3\times 2\approx 15

8−1+3

2

−2(−1)−(−3)−3×2≈15

view step

187

7+3^{2}-2\left(-1\right)-\left(-3\right)-3\times 2\approx 15

7+3

2

−2(−1)−(−3)−3×2≈15

view step

329

7+9-2\left(-1\right)-\left(-3\right)-3\times 2=15

7+9−2(−1)−(−3)−3×2=15

view step

7916

16-2\left(-1\right)-\left(-3\right)-3\times 2=15

16−2(−1)−(−3)−3×2=15

view step

2-1-2

16-\left(-2\right)-\left(-3\right)-3\times 2=15

16−(−2)−(−3)−3×2=15

view step

-22

16+2-\left(-3\right)-3\times 2=15

16+2−(−3)−3×2=15

view step

16218

18-\left(-3\right)-3\times 2=15

18−(−3)−3×2=15

view step

-33

18+3-3\times 2=15

18+3−3×2=15

view step

18321

21-3\times 2=15

21−3×2=15

view step

326

21-6=15

2

15

Answer 2

Answer:

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Step-by-step explanation:

as,

x= 2

y= -1

z= 3

2³+(-1)²+3²-(2×(-1))-((-1)×3)-(2×3)

8+1+9+2+3-6

9+9+5-6

18-1

ANS: 17