T^2+12T+42=0

Solution for T^2+12T+42=0 equation:

Simplifying
T2 + 12T + 42 = 0

Reorder the terms:
42 + 12T + T2 = 0

Solving
42 + 12T + T2 = 0

Solving for variable 'T'.

Begin completing the square.

Move the constant term to the right:

Add '-42' to each side of the equation.
42 + 12T + -42 + T2 = 0 + -42

Reorder the terms:
42 + -42 + 12T + T2 = 0 + -42

Combine like terms: 42 + -42 = 0
0 + 12T + T2 = 0 + -42
12T + T2 = 0 + -42

Combine like terms: 0 + -42 = -42
12T + T2 = -42

The T term is 12T.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12T + 36 + T2 = -42 + 36

Reorder the terms:
36 + 12T + T2 = -42 + 36

Combine like terms: -42 + 36 = -6
36 + 12T + T2 = -6

Factor a perfect square on the left side:
(T + 6)(T + 6) = -6

Can't calculate square root of the right side.

The solution to this equation could not be determined.