2. Plug in 3 and -3 4(3)² - 8 = 28 4(-3)² - 8 = 28
3. Square 3 and -3 4(9) - 8 = 28 4(9) - 8 = 28
28 = 28
The reason both answers are the same is because whenever you put a negative number to an even power, the result becomes positive because any negative multiplied by a negative number is always positive. 28 = 28
