Factor the following polynomial completely. 5x4+20x3-105x2

Step-by-step explanation:

5x4+20x3-105x2

5x2( x^2 +4x -21)

Step-by-step explanation:

Hope it is helpful....

The number of charms is 2

And, the total cost is $127

Step-by-step explanation:

The computation of the number of charms and the total cost of the bracelet is shown below:

Let us assume the number of charms be x

Now the equations are

= 19x + 89

And,

= 17x + 93

Since the cost would be the same i.e.

19x + 89 = 17x + 93

19x - 17x = 93 - 89

2x = 4

x = 2

And, the total cost is

= 19(2) + 89

= 38 + 89

= $127