What is the factored form of the expression 9x^2- 24x + 16? O (3x – 4)^2
O (4x + 3)^2
O (3x + 4)^2
O (4x – 3)^2

Step-by-step explanation:

Rewrite 9x2 as (3x)2

.

(3x)2+24x+16

Rewrite 16

as 42

.

(3x)2+24x+42

Check that the middle term is two times the product of the numbers being squared in the first term and third term.

24x=2⋅(3x)⋅4

Rewrite the polynomial.

(3x)2+2⋅(3x)⋅4+42

Factor using the perfect square trinomial rule a2+2ab+b2=(a+b)2

, where a=3x and b=4

.

(3x+4)2

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