12 = x² - x
12 - 12 = x² - x - 12
0 = x² - x - 12
x² - x - 12 = 0
x = <u>-(-1) +/- √((-1)² - 4(1)(-12))</u>
2(1)
x = <u>1 +/- √(1 + 48)</u>
2
x = <u>1 +/- √(49)
</u> 2
x = <u>1 +/- 7</u>
2
x = 0.5 +/- 3.5
x = 0.5 + 3.5 x = 0.5 - 3.5
x = 4 x = -3
<u />
Answer:
-2.5<x<2.5
Step-by-step explanation:
What???????? are you saying?????
At the end of the year ...
the price will be 44,000*1.0324 = 45,425.60
the bank balance will be 44,000*1.02 = 44,880.00
This is 545.60 fewer dollars than required to pay the price.
You lose $545.60 in current-year buying power.
View explanations and answer in the picture
