Answer:
Step-by-step explanation:
Step 1
a² - b² = (a+b)(a-b)
Step 2
cancel (x+2)
Step 3
use quadratic equation to find the factors of (4x^2+5x+1)
Step 4
cancel (4x+1)
Step 5
x= 3, x=5 or x^2 + 8x + 15
(x+3)(x+5)
(x*x)(x*5)(3*x)(3*5)
x^2 + 5x + 3x + 15
x^2 + 8x + 15
x+3 = 0 x+5 = 0
-3 -3 -5 -5
x= -3 x= -5
The solution is in the attachment
the answer is 16,564
1. 15+63= 78 ft cubed
2. 5.5+33= 38.5 m cubed