X2 plus x plus 12 equals 0 solve the problem?

Answer 1

No answer in integers, in fact any answer would involve the square root of -1 and would therefore be imaginary.

(If the equation were x2 + x - 12 the factors would be (x + 4)(x - 3),

or if it were x2 - x - 12 the factors would be (x - 4)(x + 3)).