Evaluate the following:
if x = -1, y = 2,z = -2,,
1. 2 x² - y²
2.2xy² - 3 yz + xz²
3.5 + 4x³ -2z²
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Answer:
1).-2
2)
Step-by-step explanation:
1)2×(-1)^2-(2)^2
=2-4
=-2
2) 2×(-1)×(2)^2-3×2(-2)+(-1)(-2)^2
=-2×4-3×(-4)+(-1)×4
=8+12-4
=20-4
=16
I hope it will help u❤️
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