If 2 is one solution of the equation x^2 + 3x + k = 10, where k is a constant, what is the other solution?	Choose the correct option:
A) -7	B) -4	C) -5	D) 1	E) 6
The phrase “2 is one solution of the equation” means that one value of x is 2. Thus, we first must plug 2 for x into the given equation to determine the value of k. So we have   2^2 + (3)(2) + k = 10   4 + 6 + k = 10   10 + k = 10   k =0   Next we plug 0 into the given equation for k and then solve for x.   x^2 + 3x = 10   x^2 + 3x – 10 = 0   (x+5)(x-2) = 0   x = -5 or x = 2   Thus, -5 is the other solution. Answer -5.
<result>C</result>
If 2 is one solution of the equation x^2 + 3x + k = 10, where k is a constant, what is the other solution?