Question 8 (2 points)
What number should be added to the expression x2 – 16x
to change it into a perfect square trinomial?

Add 64

Step-by-step explanation:

x^2 - 16x

If you add 64, you get x^2 - 16x + 64 which factors as (x - 8)^2

 Add 64

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5