For this item, we represent the very original value or price of the given item by x such that increasing the retail price by 40 percent will give us 1.4x. Also, when the retail price of the item is reduced by 25 percent, we have.
new retail price = 1.4x (1 - 0.25) = 1.05x.
This means that the new retail price is only 5% over the manufacturer price.
Answer:
x = 4 ± 
Step-by-step explanation:
To complete the square
add (half the coefficient of the x- term)² to both sides
x² + 2(- 4)x + 16 + 5 = 16
(x - 4)² + 5 = 16 ( subtract 5 from both sides )
(x - 4)² = 11 ( take the square root of both sides )
x - 4 = ±
( add 4 to both sides )
x = 4 ±
← exact values
Explanation:
Distributive property: → 
Expand equation.

Then, multiply 6*4.


Add by similar elements.

Don't forget to used variable with letter/symbol.

Hope this helps!
Thank you!
Have a great day!
-Charlie