**Answer:**

last step is (2x + 5)(2x + 1)

**Step-by-step explanation:**

4x^2 + 12x + 5

4x^2 + (10 + 2)x + 5

4x^2 + 10x + 2x + 5

2x(2x + 5) +1(2x + 5)

(2x + 5)(2x + 1)

**Answer:**

There are 8 in each stack.

**Step-by-step explanation:**

Divide 24/3=8.

I divide the numerator by the denominator

To find the missing side of a triangle, you would use trigonometric ratios, such as sine, cosine, or tangent.

Sine = opposite side/hypotenuse

Cosine = adjacent side/hypotenuse

Tangent = opposite side/adjacent side

“/“ = divided by

I hope this helped! Good luck!