10e^2-2e+7-6e^2+15e=

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Solution for 10e^2-2e+7-6e^2+15e= equation:


Simplifying
10e2 + -2e + 7 + -6e2 + 15e = 0

Reorder the terms:
7 + -2e + 15e + 10e2 + -6e2 = 0

Combine like terms: -2e + 15e = 13e
7 + 13e + 10e2 + -6e2 = 0

Combine like terms: 10e2 + -6e2 = 4e2
7 + 13e + 4e2 = 0

Solving
7 + 13e + 4e2 = 0

Solving for variable 'e'.

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

Divide each side by '4'.
1.75 + 3.25e + e2 = 0

Move the constant term to the right:

Add '-1.75' to each side of the equation.
1.75 + 3.25e + -1.75 + e2 = 0 + -1.75

Reorder the terms:
1.75 + -1.75 + 3.25e + e2 = 0 + -1.75

Combine like terms: 1.75 + -1.75 = 0.00
0.00 + 3.25e + e2 = 0 + -1.75
3.25e + e2 = 0 + -1.75

Combine like terms: 0 + -1.75 = -1.75
3.25e + e2 = -1.75

The e term is 3.25e.  Take half its coefficient (1.625).
Square it (2.640625) and add it to both sides.

Add '2.640625' to each side of the equation.
3.25e + 2.640625 + e2 = -1.75 + 2.640625

Reorder the terms:
2.640625 + 3.25e + e2 = -1.75 + 2.640625

Combine like terms: -1.75 + 2.640625 = 0.890625
2.640625 + 3.25e + e2 = 0.890625

Factor a perfect square on the left side:
(e + 1.625)(e + 1.625) = 0.890625

Calculate the square root of the right side: 0.943729304

Break this problem into two subproblems by setting 
(e + 1.625) equal to 0.943729304 and -0.943729304.

Subproblem 1

e + 1.625 = 0.943729304 Simplifying e + 1.625 = 0.943729304 Reorder the terms: 1.625 + e = 0.943729304 Solving 1.625 + e = 0.943729304 Solving for variable 'e'. Move all terms containing e to the left, all other terms to the right. Add '-1.625' to each side of the equation. 1.625 + -1.625 + e = 0.943729304 + -1.625 Combine like terms: 1.625 + -1.625 = 0.000 0.000 + e = 0.943729304 + -1.625 e = 0.943729304 + -1.625 Combine like terms: 0.943729304 + -1.625 = -0.681270696 e = -0.681270696 Simplifying e = -0.681270696

Subproblem 2

e + 1.625 = -0.943729304 Simplifying e + 1.625 = -0.943729304 Reorder the terms: 1.625 + e = -0.943729304 Solving 1.625 + e = -0.943729304 Solving for variable 'e'. Move all terms containing e to the left, all other terms to the right. Add '-1.625' to each side of the equation. 1.625 + -1.625 + e = -0.943729304 + -1.625 Combine like terms: 1.625 + -1.625 = 0.000 0.000 + e = -0.943729304 + -1.625 e = -0.943729304 + -1.625 Combine like terms: -0.943729304 + -1.625 = -2.568729304 e = -2.568729304 Simplifying e = -2.568729304

Solution

The solution to the problem is based on the solutions from the subproblems. e = {-0.681270696, -2.568729304}

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