2t^2+3t-7=0

Simple and best practice solution for 2t^2+3t-7=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 2t^2+3t-7=0 equation:


Simplifying
2t2 + 3t + -7 = 0

Reorder the terms:
-7 + 3t + 2t2 = 0

Solving
-7 + 3t + 2t2 = 0

Solving for variable 't'.

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

Divide each side by '2'.
-3.5 + 1.5t + t2 = 0

Move the constant term to the right:

Add '3.5' to each side of the equation.
-3.5 + 1.5t + 3.5 + t2 = 0 + 3.5

Reorder the terms:
-3.5 + 3.5 + 1.5t + t2 = 0 + 3.5

Combine like terms: -3.5 + 3.5 = 0.0
0.0 + 1.5t + t2 = 0 + 3.5
1.5t + t2 = 0 + 3.5

Combine like terms: 0 + 3.5 = 3.5
1.5t + t2 = 3.5

The t term is 1.5t.  Take half its coefficient (0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
1.5t + 0.5625 + t2 = 3.5 + 0.5625

Reorder the terms:
0.5625 + 1.5t + t2 = 3.5 + 0.5625

Combine like terms: 3.5 + 0.5625 = 4.0625
0.5625 + 1.5t + t2 = 4.0625

Factor a perfect square on the left side:
(t + 0.75)(t + 0.75) = 4.0625

Calculate the square root of the right side: 2.015564437

Break this problem into two subproblems by setting 
(t + 0.75) equal to 2.015564437 and -2.015564437.

Subproblem 1

t + 0.75 = 2.015564437 Simplifying t + 0.75 = 2.015564437 Reorder the terms: 0.75 + t = 2.015564437 Solving 0.75 + t = 2.015564437 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + t = 2.015564437 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + t = 2.015564437 + -0.75 t = 2.015564437 + -0.75 Combine like terms: 2.015564437 + -0.75 = 1.265564437 t = 1.265564437 Simplifying t = 1.265564437

Subproblem 2

t + 0.75 = -2.015564437 Simplifying t + 0.75 = -2.015564437 Reorder the terms: 0.75 + t = -2.015564437 Solving 0.75 + t = -2.015564437 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + t = -2.015564437 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + t = -2.015564437 + -0.75 t = -2.015564437 + -0.75 Combine like terms: -2.015564437 + -0.75 = -2.765564437 t = -2.765564437 Simplifying t = -2.765564437

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.265564437, -2.765564437}

See similar equations:

| 5(x-3)+10x-12+2(2x+3)=12(x-1)-5(6-2x) | | 2x^4-x^3=0 | | 19x-21=2x-42 | | 8x^4+10x^3-18x^2=0 | | 3x^3+15x^2=0 | | 3x^2-12x+27=0 | | r=3 | | -9x^2-6x=0 | | ex+6y=1164 | | 3.4+x=7 | | 10-5=x | | 5-10=x | | 2x^2+5x=0 | | 56+8x-4x^2=8 | | 10x-7=5x+8 | | 2x^2+-5x=0 | | 2*3(6+8+9)/7= | | 3x+6y=1164 | | t+5.4=8.4 | | 10=-25+x | | 32(8)=2n | | 4(y-1)=3y-9 | | 4x=16-8 | | 120-6x=21x+24 | | x^2-3x+3=31 | | 2x+3y=-10 | | 132-4x=5x+6 | | -1x-9=-4x+6 | | log(x+3)-log(7-x)=-log(2) | | 8+4x=44x | | x^2-14x+1=0 | | 6x+27=15x-72 |

Equations solver categories