Answer:
c = 121
Step-by-step explanation:
Given
t² - 22t
To complete the square
add ( half the coefficient of the t- term )² to t² - 22t
= t² + 2(- 11)t + (- 11)²
= t² - 22t + 121
with c = 121
Thus
t² - 22t + 121 = (t - 11)²
Profit=no of katanas sold * (selling price of each katana-cost of making one katana) - cost to run the website
(x+2)(5x-1) (x+10)(x+7)
(x+10)(x+2) 3(5x-1)
Cancel like factors and you're left with. (x+7)/3
