36
48
common factors:
gcf:
what is it?

6

Step-by-step explanation: 36 divided by 6 equals 6

48 divided by8 is 6

common factor is 6

Step-by-step explanation:

Set the stress function s(x) = 2x^2 + 4x - 30 equal to zero and solve the resulting equation for x:

s(x) = 2x^2 + 4x - 30, or (after reduction), s(x)/2 = x^2 + 2x - 15 = 0.

Solve this by factoring:  (x - 5)(x + 3) = 0 yields x:  {-3, 5}

Assuming that x is positive (all distances are positive), x = 5

Answer j is correct:  x = 5 ft; at x = 5 ft, the stress will be zero at x = 5 ft.