I believe it is basically saying what's a simpler way to write this equation
in this case, we could end up with..
The answer is B.8. You just have to multiply the numbers on the right by 2 and divide the numbers on the left by 2.
The sum of cubes is a special form that has the factorization
... x³ + a³ = (x +a)(x² -ax +a²)
For a=3, the factorization is
... x³ + 3³ = (x +3)(x² -3x +9)
The first of these factors is zero for x=-3. The second of these factors is zero for
... x = (3±√-27)/2 = (3/2)(1±i√3) . . . . . from the quadratic formula
The zeros are {-3, (3/2)(1-i√3), (3/2)(1+i√3)}.
The function looks like it goes through the points (0, 0), (1, 1), (4, 2), so may be a square root function. It seems to have undefined slope at x=0, as a square root function does.
Your answer is .448 meters
(4mm) (112) = 448mm
There are 1000mm in 1 meter so we want to divide 448 by 1000.
(448mm) / (1000 mm/m) = .448 meters
