n^2+4n-10=0

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Solution for n^2+4n-10=0 equation:


Simplifying
n2 + 4n + -10 = 0

Reorder the terms:
-10 + 4n + n2 = 0

Solving
-10 + 4n + n2 = 0

Solving for variable 'n'.

Begin completing the square.

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + 4n + 10 + n2 = 0 + 10

Reorder the terms:
-10 + 10 + 4n + n2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 4n + n2 = 0 + 10
4n + n2 = 0 + 10

Combine like terms: 0 + 10 = 10
4n + n2 = 10

The n term is 4n.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4n + 4 + n2 = 10 + 4

Reorder the terms:
4 + 4n + n2 = 10 + 4

Combine like terms: 10 + 4 = 14
4 + 4n + n2 = 14

Factor a perfect square on the left side:
(n + 2)(n + 2) = 14

Calculate the square root of the right side: 3.741657387

Break this problem into two subproblems by setting 
(n + 2) equal to 3.741657387 and -3.741657387.

Subproblem 1

n + 2 = 3.741657387 Simplifying n + 2 = 3.741657387 Reorder the terms: 2 + n = 3.741657387 Solving 2 + n = 3.741657387 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + n = 3.741657387 + -2 Combine like terms: 2 + -2 = 0 0 + n = 3.741657387 + -2 n = 3.741657387 + -2 Combine like terms: 3.741657387 + -2 = 1.741657387 n = 1.741657387 Simplifying n = 1.741657387

Subproblem 2

n + 2 = -3.741657387 Simplifying n + 2 = -3.741657387 Reorder the terms: 2 + n = -3.741657387 Solving 2 + n = -3.741657387 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + n = -3.741657387 + -2 Combine like terms: 2 + -2 = 0 0 + n = -3.741657387 + -2 n = -3.741657387 + -2 Combine like terms: -3.741657387 + -2 = -5.741657387 n = -5.741657387 Simplifying n = -5.741657387

Solution

The solution to the problem is based on the solutions from the subproblems. n = {1.741657387, -5.741657387}

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