7e^2+4e-3-e^2=

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Solution for 7e^2+4e-3-e^2= equation:


Simplifying
7e2 + 4e + -3 + -1e2 = 0

Reorder the terms:
-3 + 4e + 7e2 + -1e2 = 0

Combine like terms: 7e2 + -1e2 = 6e2
-3 + 4e + 6e2 = 0

Solving
-3 + 4e + 6e2 = 0

Solving for variable 'e'.

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

Divide each side by '6'.
-0.5 + 0.6666666667e + e2 = 0

Move the constant term to the right:

Add '0.5' to each side of the equation.
-0.5 + 0.6666666667e + 0.5 + e2 = 0 + 0.5

Reorder the terms:
-0.5 + 0.5 + 0.6666666667e + e2 = 0 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + 0.6666666667e + e2 = 0 + 0.5
0.6666666667e + e2 = 0 + 0.5

Combine like terms: 0 + 0.5 = 0.5
0.6666666667e + e2 = 0.5

The e term is 0.6666666667e.  Take half its coefficient (0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
0.6666666667e + 0.1111111112 + e2 = 0.5 + 0.1111111112

Reorder the terms:
0.1111111112 + 0.6666666667e + e2 = 0.5 + 0.1111111112

Combine like terms: 0.5 + 0.1111111112 = 0.6111111112
0.1111111112 + 0.6666666667e + e2 = 0.6111111112

Factor a perfect square on the left side:
(e + 0.3333333334)(e + 0.3333333334) = 0.6111111112

Calculate the square root of the right side: 0.78173596

Break this problem into two subproblems by setting 
(e + 0.3333333334) equal to 0.78173596 and -0.78173596.

Subproblem 1

e + 0.3333333334 = 0.78173596 Simplifying e + 0.3333333334 = 0.78173596 Reorder the terms: 0.3333333334 + e = 0.78173596 Solving 0.3333333334 + e = 0.78173596 Solving for variable 'e'. Move all terms containing e to the left, all other terms to the right. Add '-0.3333333334' to each side of the equation. 0.3333333334 + -0.3333333334 + e = 0.78173596 + -0.3333333334 Combine like terms: 0.3333333334 + -0.3333333334 = 0.0000000000 0.0000000000 + e = 0.78173596 + -0.3333333334 e = 0.78173596 + -0.3333333334 Combine like terms: 0.78173596 + -0.3333333334 = 0.4484026266 e = 0.4484026266 Simplifying e = 0.4484026266

Subproblem 2

e + 0.3333333334 = -0.78173596 Simplifying e + 0.3333333334 = -0.78173596 Reorder the terms: 0.3333333334 + e = -0.78173596 Solving 0.3333333334 + e = -0.78173596 Solving for variable 'e'. Move all terms containing e to the left, all other terms to the right. Add '-0.3333333334' to each side of the equation. 0.3333333334 + -0.3333333334 + e = -0.78173596 + -0.3333333334 Combine like terms: 0.3333333334 + -0.3333333334 = 0.0000000000 0.0000000000 + e = -0.78173596 + -0.3333333334 e = -0.78173596 + -0.3333333334 Combine like terms: -0.78173596 + -0.3333333334 = -1.1150692934 e = -1.1150692934 Simplifying e = -1.1150692934

Solution

The solution to the problem is based on the solutions from the subproblems. e = {0.4484026266, -1.1150692934}

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