12a^2+4a-5=0

Solution for 12a^2+4a-5=0 equation:

Simplifying
12a2 + 4a + -5 = 0

Reorder the terms:
-5 + 4a + 12a2 = 0

Solving
-5 + 4a + 12a2 = 0

Solving for variable 'a'.

Factor a trinomial.
(-5 + -6a)(1 + -2a) = 0

Subproblem 1
Set the factor '(-5 + -6a)' equal to zero and attempt to solve:

Simplifying
-5 + -6a = 0

Solving
-5 + -6a = 0

Move all terms containing a to the left, all other terms to the right.

Add '5' to each side of the equation.
-5 + 5 + -6a = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -6a = 0 + 5
-6a = 0 + 5

Combine like terms: 0 + 5 = 5
-6a = 5

Divide each side by '-6'.
a = -0.8333333333

Simplifying
a = -0.8333333333
Subproblem 2
Set the factor '(1 + -2a)' equal to zero and attempt to solve:

Simplifying
1 + -2a = 0

Solving
1 + -2a = 0

Move all terms containing a to the left, all other terms to the right.

Add '-1' to each side of the equation.
1 + -1 + -2a = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -2a = 0 + -1
-2a = 0 + -1

Combine like terms: 0 + -1 = -1
-2a = -1

Divide each side by '-2'.
a = 0.5

Simplifying
a = 0.5
Solution
a = {-0.8333333333, 0.5}