3. Find the value of the following expressions, when x=-1:
(1) 2x - 7 () - x + 2
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Answered by
2
Answer:
2x-7-x+2
x-5
Step-by-step explanation:
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Answered by
2
(1) 2x-7
=(2 x -1) -7
= -2-7
= -9
(2) -x + 2
= -1 + 2
= 1
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