Y=12 because the triangles have proportional side lengths
Answer: 67
Step-by-step explanation:
3x^2 + 5x + 25
x = 3
3(3)^2 + 5(3) + 25
3^2 = 9
3(9) + 5(3) + 25
3 * 9 = 27
27 + 5(3) + 25
5 * 3 = 15
27 + 15 + 25
27 + 15 = 42
42 + 25 = 67
X(x - 2)(x - 4)
x(x² - 6x + 8)
x³ - 6x² + 8x
The answer to that is x=8
