4.9x^2+2.74x=10

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Solution for 4.9x^2+2.74x=10 equation:


Simplifying
4.9x2 + 2.74x = 10

Reorder the terms:
2.74x + 4.9x2 = 10

Solving
2.74x + 4.9x2 = 10

Solving for variable 'x'.

Reorder the terms:
-10 + 2.74x + 4.9x2 = 10 + -10

Combine like terms: 10 + -10 = 0
-10 + 2.74x + 4.9x2 = 0

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

Divide each side by '4.9'.
-2.040816327 + 0.5591836735x + x2 = 0

Move the constant term to the right:

Add '2.040816327' to each side of the equation.
-2.040816327 + 0.5591836735x + 2.040816327 + x2 = 0 + 2.040816327

Reorder the terms:
-2.040816327 + 2.040816327 + 0.5591836735x + x2 = 0 + 2.040816327

Combine like terms: -2.040816327 + 2.040816327 = 0.000000000
0.000000000 + 0.5591836735x + x2 = 0 + 2.040816327
0.5591836735x + x2 = 0 + 2.040816327

Combine like terms: 0 + 2.040816327 = 2.040816327
0.5591836735x + x2 = 2.040816327

The x term is 0.5591836735x.  Take half its coefficient (0.2795918368).
Square it (0.07817159521) and add it to both sides.

Add '0.07817159521' to each side of the equation.
0.5591836735x + 0.07817159521 + x2 = 2.040816327 + 0.07817159521

Reorder the terms:
0.07817159521 + 0.5591836735x + x2 = 2.040816327 + 0.07817159521

Combine like terms: 2.040816327 + 0.07817159521 = 2.11898792221
0.07817159521 + 0.5591836735x + x2 = 2.11898792221

Factor a perfect square on the left side:
(x + 0.2795918368)(x + 0.2795918368) = 2.11898792221

Calculate the square root of the right side: 1.455674387

Break this problem into two subproblems by setting 
(x + 0.2795918368) equal to 1.455674387 and -1.455674387.

Subproblem 1

x + 0.2795918368 = 1.455674387 Simplifying x + 0.2795918368 = 1.455674387 Reorder the terms: 0.2795918368 + x = 1.455674387 Solving 0.2795918368 + x = 1.455674387 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2795918368' to each side of the equation. 0.2795918368 + -0.2795918368 + x = 1.455674387 + -0.2795918368 Combine like terms: 0.2795918368 + -0.2795918368 = 0.0000000000 0.0000000000 + x = 1.455674387 + -0.2795918368 x = 1.455674387 + -0.2795918368 Combine like terms: 1.455674387 + -0.2795918368 = 1.1760825502 x = 1.1760825502 Simplifying x = 1.1760825502

Subproblem 2

x + 0.2795918368 = -1.455674387 Simplifying x + 0.2795918368 = -1.455674387 Reorder the terms: 0.2795918368 + x = -1.455674387 Solving 0.2795918368 + x = -1.455674387 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2795918368' to each side of the equation. 0.2795918368 + -0.2795918368 + x = -1.455674387 + -0.2795918368 Combine like terms: 0.2795918368 + -0.2795918368 = 0.0000000000 0.0000000000 + x = -1.455674387 + -0.2795918368 x = -1.455674387 + -0.2795918368 Combine like terms: -1.455674387 + -0.2795918368 = -1.7352662238 x = -1.7352662238 Simplifying x = -1.7352662238

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.1760825502, -1.7352662238}

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