9t^2-30t-4=0

Simple and best practice solution for 9t^2-30t-4=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 9t^2-30t-4=0 equation:


Simplifying
9t2 + -30t + -4 = 0

Reorder the terms:
-4 + -30t + 9t2 = 0

Solving
-4 + -30t + 9t2 = 0

Solving for variable 't'.

Begin completing the square.  Divide all terms by
9 the coefficient of the squared term: 

Divide each side by '9'.
-0.4444444444 + -3.333333333t + t2 = 0

Move the constant term to the right:

Add '0.4444444444' to each side of the equation.
-0.4444444444 + -3.333333333t + 0.4444444444 + t2 = 0 + 0.4444444444

Reorder the terms:
-0.4444444444 + 0.4444444444 + -3.333333333t + t2 = 0 + 0.4444444444

Combine like terms: -0.4444444444 + 0.4444444444 = 0.0000000000
0.0000000000 + -3.333333333t + t2 = 0 + 0.4444444444
-3.333333333t + t2 = 0 + 0.4444444444

Combine like terms: 0 + 0.4444444444 = 0.4444444444
-3.333333333t + t2 = 0.4444444444

The t term is -3.333333333t.  Take half its coefficient (-1.666666667).
Square it (2.777777779) and add it to both sides.

Add '2.777777779' to each side of the equation.
-3.333333333t + 2.777777779 + t2 = 0.4444444444 + 2.777777779

Reorder the terms:
2.777777779 + -3.333333333t + t2 = 0.4444444444 + 2.777777779

Combine like terms: 0.4444444444 + 2.777777779 = 3.2222222234
2.777777779 + -3.333333333t + t2 = 3.2222222234

Factor a perfect square on the left side:
(t + -1.666666667)(t + -1.666666667) = 3.2222222234

Calculate the square root of the right side: 1.795054936

Break this problem into two subproblems by setting 
(t + -1.666666667) equal to 1.795054936 and -1.795054936.

Subproblem 1

t + -1.666666667 = 1.795054936 Simplifying t + -1.666666667 = 1.795054936 Reorder the terms: -1.666666667 + t = 1.795054936 Solving -1.666666667 + t = 1.795054936 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.666666667' to each side of the equation. -1.666666667 + 1.666666667 + t = 1.795054936 + 1.666666667 Combine like terms: -1.666666667 + 1.666666667 = 0.000000000 0.000000000 + t = 1.795054936 + 1.666666667 t = 1.795054936 + 1.666666667 Combine like terms: 1.795054936 + 1.666666667 = 3.461721603 t = 3.461721603 Simplifying t = 3.461721603

Subproblem 2

t + -1.666666667 = -1.795054936 Simplifying t + -1.666666667 = -1.795054936 Reorder the terms: -1.666666667 + t = -1.795054936 Solving -1.666666667 + t = -1.795054936 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.666666667' to each side of the equation. -1.666666667 + 1.666666667 + t = -1.795054936 + 1.666666667 Combine like terms: -1.666666667 + 1.666666667 = 0.000000000 0.000000000 + t = -1.795054936 + 1.666666667 t = -1.795054936 + 1.666666667 Combine like terms: -1.795054936 + 1.666666667 = -0.128388269 t = -0.128388269 Simplifying t = -0.128388269

Solution

The solution to the problem is based on the solutions from the subproblems. t = {3.461721603, -0.128388269}

See similar equations:

| (c+5)(c-5)= | | 4x=18+2x | | 4x(3x+7)=-4 | | 6(x-6)=84/14 | | 13x+2=3(4x-2)+8 | | 9x-5+7x=5(2x+1) | | -(x-5)+7=12-x | | 3(x-2)=5+5x-2x | | 4v^5+6v^4-10v^3=0 | | 11x+8-4=10-4 | | .04(6t-6)=.24(t-3)+.48 | | y=-310576+7552x | | x=-310576+7552y | | 4+f=-6 | | Qx=-310576+7552y | | (0.4x+3)(0.4x-3)= | | c-4+2forc=7 | | 8-5x=12-9x | | 7(x+1)-7=5x+2(-2+x) | | 6t^2=11t | | 4(3x-6)+4=12x-20 | | (x^2-x+9)(x-3)= | | u=u+20 | | 12/(12-2x5)+6 | | 4x^2-(-9)= | | 144-9x^2= | | 18(6c-1)-18=106c+18 | | 2y-0.9=3y | | 3z+4z=6z+6 | | 12x-16=8+16 | | 3/4x-1/20=-2 | | 120=5x+20+3x-10 |

Equations solver categories