(a) x = -2
Plug in -2 for x in the equation:
2(-2) - 2
Note that when you multiply a negative number and a positive number, the product will be a negative. Also, remember to follow PEMDAS. First, multiply:
2 * -2 = -4
Next, subtract:
-4 - 2 = -6
When x = -2, your answer is -6.
(b) x = 3
Plug in 3 for x in the equation:
2(3) - 2
Remember to follow PEMDAS. First, multiply:
2 * 3 = 6
Next, subtract:
6 - 2 = 4
When x = 3, your answer is 4.
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