D -9 because it has a -3 and its going to be the same - sign
10 - 5 = 5
Hope this helped your husband.
Answer:
1,215 i think please be right
For the second question (5/6)/(4) is the same as (5/6)*(1/4) so just multiply across and you get (5/24)
X^4 - 4x^3 - 9x^2 + 36x = 0
x(x^3 - 4x^2 - 9x + 36) = 0
x(x^2(x - 4) - 9(x - 4) = 0
x(x + 3)(x - 3)(x - 4) = 0
the zeroes are -3, 0, 3, 4 Answer
