4(7+x^2)=3x+8

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Solution for 4(7+x^2)=3x+8 equation:


Simplifying
4(7 + x2) = 3x + 8
(7 * 4 + x2 * 4) = 3x + 8
(28 + 4x2) = 3x + 8

Reorder the terms:
28 + 4x2 = 8 + 3x

Solving
28 + 4x2 = 8 + 3x

Solving for variable 'x'.

Reorder the terms:
28 + -8 + -3x + 4x2 = 8 + 3x + -8 + -3x

Combine like terms: 28 + -8 = 20
20 + -3x + 4x2 = 8 + 3x + -8 + -3x

Reorder the terms:
20 + -3x + 4x2 = 8 + -8 + 3x + -3x

Combine like terms: 8 + -8 = 0
20 + -3x + 4x2 = 0 + 3x + -3x
20 + -3x + 4x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
20 + -3x + 4x2 = 0

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

Divide each side by '4'.
5 + -0.75x + x2 = 0

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + -0.75x + -5 + x2 = 0 + -5

Reorder the terms:
5 + -5 + -0.75x + x2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -0.75x + x2 = 0 + -5
-0.75x + x2 = 0 + -5

Combine like terms: 0 + -5 = -5
-0.75x + x2 = -5

The x term is -0.75x.  Take half its coefficient (-0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
-0.75x + 0.140625 + x2 = -5 + 0.140625

Reorder the terms:
0.140625 + -0.75x + x2 = -5 + 0.140625

Combine like terms: -5 + 0.140625 = -4.859375
0.140625 + -0.75x + x2 = -4.859375

Factor a perfect square on the left side:
(x + -0.375)(x + -0.375) = -4.859375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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