Question

Find the value of the following if x=-1, y=1 and z= -2
(1) 3x^2-7y
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Answer 1

Answer:

-4

Step-by-step explanation:

3x^2-7y

3(-1)^2-7(1)

3(1)-7

3-7= -4

Answer 2

Answer:

20

Step-by-step explanation:

3(1)x2-7y

3(1)2-7(1)

4x5=20

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