9t^2+2t-2=0

Simple and best practice solution for 9t^2+2t-2=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+2t-2=0 equation:


Simplifying
9t2 + 2t + -2 = 0

Reorder the terms:
-2 + 2t + 9t2 = 0

Solving
-2 + 2t + 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'.
-0.2222222222 + 0.2222222222t + t2 = 0

Move the constant term to the right:

Add '0.2222222222' to each side of the equation.
-0.2222222222 + 0.2222222222t + 0.2222222222 + t2 = 0 + 0.2222222222

Reorder the terms:
-0.2222222222 + 0.2222222222 + 0.2222222222t + t2 = 0 + 0.2222222222

Combine like terms: -0.2222222222 + 0.2222222222 = 0.0000000000
0.0000000000 + 0.2222222222t + t2 = 0 + 0.2222222222
0.2222222222t + t2 = 0 + 0.2222222222

Combine like terms: 0 + 0.2222222222 = 0.2222222222
0.2222222222t + t2 = 0.2222222222

The t term is 0.2222222222t.  Take half its coefficient (0.1111111111).
Square it (0.01234567901) and add it to both sides.

Add '0.01234567901' to each side of the equation.
0.2222222222t + 0.01234567901 + t2 = 0.2222222222 + 0.01234567901

Reorder the terms:
0.01234567901 + 0.2222222222t + t2 = 0.2222222222 + 0.01234567901

Combine like terms: 0.2222222222 + 0.01234567901 = 0.23456790121
0.01234567901 + 0.2222222222t + t2 = 0.23456790121

Factor a perfect square on the left side:
(t + 0.1111111111)(t + 0.1111111111) = 0.23456790121

Calculate the square root of the right side: 0.484322105

Break this problem into two subproblems by setting 
(t + 0.1111111111) equal to 0.484322105 and -0.484322105.

Subproblem 1

t + 0.1111111111 = 0.484322105 Simplifying t + 0.1111111111 = 0.484322105 Reorder the terms: 0.1111111111 + t = 0.484322105 Solving 0.1111111111 + t = 0.484322105 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.1111111111' to each side of the equation. 0.1111111111 + -0.1111111111 + t = 0.484322105 + -0.1111111111 Combine like terms: 0.1111111111 + -0.1111111111 = 0.0000000000 0.0000000000 + t = 0.484322105 + -0.1111111111 t = 0.484322105 + -0.1111111111 Combine like terms: 0.484322105 + -0.1111111111 = 0.3732109939 t = 0.3732109939 Simplifying t = 0.3732109939

Subproblem 2

t + 0.1111111111 = -0.484322105 Simplifying t + 0.1111111111 = -0.484322105 Reorder the terms: 0.1111111111 + t = -0.484322105 Solving 0.1111111111 + t = -0.484322105 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.1111111111' to each side of the equation. 0.1111111111 + -0.1111111111 + t = -0.484322105 + -0.1111111111 Combine like terms: 0.1111111111 + -0.1111111111 = 0.0000000000 0.0000000000 + t = -0.484322105 + -0.1111111111 t = -0.484322105 + -0.1111111111 Combine like terms: -0.484322105 + -0.1111111111 = -0.5954332161 t = -0.5954332161 Simplifying t = -0.5954332161

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.3732109939, -0.5954332161}

See similar equations:

| 7(3w+5)-4w-20= | | 3+(x-4)=20 | | 3n+9=29 | | 3x-3=12x+144 | | 7xn=49 | | 9x-t=4 | | 5(5-2X)=135 | | 1a-2=23 | | 2w+20+5=-20+5w | | F(x)=340 | | 12w-15=7w | | 4n^3+17-n^3-5= | | 34=6w+10-9w | | 18+12c=10c-20 | | 14y-6+7y=4+10-10y | | -32-n=-7 | | 10x^2+26x+16=0 | | -2v=-12-6v | | 7-3r=1-2r | | 5y+1+3yz=-15 | | 6x+9-8x=15-18x+16x-6 | | F(12.5)=10x | | -7h+10=-2h-10 | | 10x-86=?4x+82 | | k+11= | | -4+5p+8=7p-10 | | 5x-17=1x+36 | | -4g-9=-5g | | -7(8+4X)=-308 | | 8.4w-0.67=15.29 | | 7r^2+14r-11=10 | | -8+s=2s |

Equations solver categories