2(2x+1)= (2 x 2x) + (2 x 1) = 4x + 2
Answer:
(2x + 1)(x - 3)
Step-by-step explanation:





Answer:
x = 13
Step-by-step explanation:
Split the triangle in to two. The dimensions of each will be 12 x 5 x X.
Use the pythagorean theorem.
h^2 = 144 + 25 = 169
h = sqrt 169 = 13