if x = 1, y = 2 and z = -3, find the values
i) x² + xy - yz²
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Answers
Answered by
0
Answer:
Answer is (-15)
Step-by-step explanation:
If x2= 1
xy= 2
yz2 = 2*(-3)2
= 2*9
=18
substitute the values , 1+2-18=(-15)
Answered by
1
Answer:
-15
Step-by-step explanation:
= x2 + xy - yz2
= 1 + (1×2) - (2×[3×3])
= 3 - 18
= -15
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