2. Find the value of :
(i) 4x+5y-7z when x=2, y=3, z= -1
(ii) x2-6x+7 when x= -1
Answers
Answered by
1
Answer:
4×2+5×3-7×-1
8+15+7
30
2) -1^2-6×-1+7
1+6+7
14
Answered by
0
Step-by-step explanation:
(i) 4(2)+5(3)-7(-1)
=8+15+7
=30
(ii) (-1)2-6(-1)+7
=-2+6+7
=11
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