7t^4-12t^2-27=

Solution for 7t^4-12t^2-27= equation:

Simplifying
7t4 + -12t2 + -27 = 0

Reorder the terms:
-27 + -12t2 + 7t4 = 0

Solving
-27 + -12t2 + 7t4 = 0

Solving for variable 't'.

Factor a trinomial.
(-9 + -7t2)(3 + -1t2) = 0

Subproblem 1
Set the factor '(-9 + -7t2)' equal to zero and attempt to solve:

Simplifying
-9 + -7t2 = 0

Solving
-9 + -7t2 = 0

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

Add '9' to each side of the equation.
-9 + 9 + -7t2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -7t2 = 0 + 9
-7t2 = 0 + 9

Combine like terms: 0 + 9 = 9
-7t2 = 9

Divide each side by '-7'.
t2 = -1.285714286

Simplifying
t2 = -1.285714286

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.
Subproblem 2
Set the factor '(3 + -1t2)' equal to zero and attempt to solve:

Simplifying
3 + -1t2 = 0

Solving
3 + -1t2 = 0

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

Add '-3' to each side of the equation.
3 + -3 + -1t2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1t2 = 0 + -3
-1t2 = 0 + -3

Combine like terms: 0 + -3 = -3
-1t2 = -3

Divide each side by '-1'.
t2 = 3

Simplifying
t2 = 3

Take the square root of each side:
t = {-1.732050808, 1.732050808}
Solution
t = {-1.732050808, 1.732050808}