5x^2+9.8=14x

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Solution for 5x^2+9.8=14x equation:


Simplifying
5x2 + 9.8 = 14x

Reorder the terms:
9.8 + 5x2 = 14x

Solving
9.8 + 5x2 = 14x

Solving for variable 'x'.

Reorder the terms:
9.8 + -14x + 5x2 = 14x + -14x

Combine like terms: 14x + -14x = 0
9.8 + -14x + 5x2 = 0

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

Divide each side by '5'.
1.96 + -2.8x + x2 = 0

Move the constant term to the right:

Add '-1.96' to each side of the equation.
1.96 + -2.8x + -1.96 + x2 = 0 + -1.96

Reorder the terms:
1.96 + -1.96 + -2.8x + x2 = 0 + -1.96

Combine like terms: 1.96 + -1.96 = 0.00
0.00 + -2.8x + x2 = 0 + -1.96
-2.8x + x2 = 0 + -1.96

Combine like terms: 0 + -1.96 = -1.96
-2.8x + x2 = -1.96

The x term is -2.8x.  Take half its coefficient (-1.4).
Square it (1.96) and add it to both sides.

Add '1.96' to each side of the equation.
-2.8x + 1.96 + x2 = -1.96 + 1.96

Reorder the terms:
1.96 + -2.8x + x2 = -1.96 + 1.96

Combine like terms: -1.96 + 1.96 = 0.00
1.96 + -2.8x + x2 = 0.00

Factor a perfect square on the left side:
(x + -1.4)(x + -1.4) = 0.00

Calculate the square root of the right side: 0.00

Break this problem into two subproblems by setting 
(x + -1.4) equal to 0.00 and 0.00.

Subproblem 1

x + -1.4 = 0.00 Simplifying x + -1.4 = 0.00 Reorder the terms: -1.4 + x = 0.00 Solving -1.4 + x = 0.00 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.4' to each side of the equation. -1.4 + 1.4 + x = 0.00 + 1.4 Combine like terms: -1.4 + 1.4 = 0.0 0.0 + x = 0.00 + 1.4 x = 0.00 + 1.4 Combine like terms: 0.00 + 1.4 = 1.4 x = 1.4 Simplifying x = 1.4

Subproblem 2

x + -1.4 = 0.00 Simplifying x + -1.4 = 0.00 Reorder the terms: -1.4 + x = 0.00 Solving -1.4 + x = 0.00 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.4' to each side of the equation. -1.4 + 1.4 + x = 0.00 + 1.4 Combine like terms: -1.4 + 1.4 = 0.0 0.0 + x = 0.00 + 1.4 x = 0.00 + 1.4 Combine like terms: 0.00 + 1.4 = 1.4 x = 1.4 Simplifying x = 1.4

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.4, 1.4}

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