-7t^2-3t+7=0

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


Simplifying
-7t2 + -3t + 7 = 0

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

Solving
7 + -3t + -7t2 = 0

Solving for variable 't'.

Begin completing the square.  Divide all terms by
-7 the coefficient of the squared term: 

Divide each side by '-7'.
-1 + 0.4285714286t + t2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + 0.4285714286t + 1 + t2 = 0 + 1

Reorder the terms:
-1 + 1 + 0.4285714286t + t2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 0.4285714286t + t2 = 0 + 1
0.4285714286t + t2 = 0 + 1

Combine like terms: 0 + 1 = 1
0.4285714286t + t2 = 1

The t term is 0.4285714286t.  Take half its coefficient (0.2142857143).
Square it (0.04591836735) and add it to both sides.

Add '0.04591836735' to each side of the equation.
0.4285714286t + 0.04591836735 + t2 = 1 + 0.04591836735

Reorder the terms:
0.04591836735 + 0.4285714286t + t2 = 1 + 0.04591836735

Combine like terms: 1 + 0.04591836735 = 1.04591836735
0.04591836735 + 0.4285714286t + t2 = 1.04591836735

Factor a perfect square on the left side:
(t + 0.2142857143)(t + 0.2142857143) = 1.04591836735

Calculate the square root of the right side: 1.022701505

Break this problem into two subproblems by setting 
(t + 0.2142857143) equal to 1.022701505 and -1.022701505.

Subproblem 1

t + 0.2142857143 = 1.022701505 Simplifying t + 0.2142857143 = 1.022701505 Reorder the terms: 0.2142857143 + t = 1.022701505 Solving 0.2142857143 + t = 1.022701505 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.2142857143' to each side of the equation. 0.2142857143 + -0.2142857143 + t = 1.022701505 + -0.2142857143 Combine like terms: 0.2142857143 + -0.2142857143 = 0.0000000000 0.0000000000 + t = 1.022701505 + -0.2142857143 t = 1.022701505 + -0.2142857143 Combine like terms: 1.022701505 + -0.2142857143 = 0.8084157907 t = 0.8084157907 Simplifying t = 0.8084157907

Subproblem 2

t + 0.2142857143 = -1.022701505 Simplifying t + 0.2142857143 = -1.022701505 Reorder the terms: 0.2142857143 + t = -1.022701505 Solving 0.2142857143 + t = -1.022701505 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.2142857143' to each side of the equation. 0.2142857143 + -0.2142857143 + t = -1.022701505 + -0.2142857143 Combine like terms: 0.2142857143 + -0.2142857143 = 0.0000000000 0.0000000000 + t = -1.022701505 + -0.2142857143 t = -1.022701505 + -0.2142857143 Combine like terms: -1.022701505 + -0.2142857143 = -1.2369872193 t = -1.2369872193 Simplifying t = -1.2369872193

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.8084157907, -1.2369872193}

See similar equations:

| 2(ax+b)+3=x | | -5j^2+2j+5=0 | | 10-1x=20+5x | | 13x+5=50 | | 6y^2-7=0 | | y=-4(x-3) | | y=-4x(x-3)(x+2)(2x-1) | | 5s^2-7=0 | | -5d^2-7d-2=0 | | -2w^2+7w-1=0 | | A=3.14(10) | | -1000/8= | | (-10)(-10)(-10)= | | A=3.14(10)2 | | 3x+10=2x-50 | | (3c-7)(2c-5)= | | 2m+6n+4m+8n= | | 37-29=4 | | 2x-4=2(5+x) | | -80+360= | | =12+6(8m-3) | | (90)(-4)= | | 4yx^4*2x^2y^5=0 | | 13/9x2/3 | | 4xy*3xy^5*4x^4y^2=0 | | 4m^2*n=0 | | x-.3x=8000 | | x/43=-75-87 | | 3x-5*2=15 | | x^3y^5*x^5y^4=0 | | 10k^2-13k-9=0 | | 25+5x=x |

Equations solver categories