40x-7x^2=101-3x^2

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Solution for 40x-7x^2=101-3x^2 equation:


Simplifying
40x + -7x2 = 101 + -3x2

Solving
40x + -7x2 = 101 + -3x2

Solving for variable 'x'.

Reorder the terms:
-101 + 40x + -7x2 + 3x2 = 101 + -3x2 + -101 + 3x2

Combine like terms: -7x2 + 3x2 = -4x2
-101 + 40x + -4x2 = 101 + -3x2 + -101 + 3x2

Reorder the terms:
-101 + 40x + -4x2 = 101 + -101 + -3x2 + 3x2

Combine like terms: 101 + -101 = 0
-101 + 40x + -4x2 = 0 + -3x2 + 3x2
-101 + 40x + -4x2 = -3x2 + 3x2

Combine like terms: -3x2 + 3x2 = 0
-101 + 40x + -4x2 = 0

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

Divide each side by '-4'.
25.25 + -10x + x2 = 0

Move the constant term to the right:

Add '-25.25' to each side of the equation.
25.25 + -10x + -25.25 + x2 = 0 + -25.25

Reorder the terms:
25.25 + -25.25 + -10x + x2 = 0 + -25.25

Combine like terms: 25.25 + -25.25 = 0.00
0.00 + -10x + x2 = 0 + -25.25
-10x + x2 = 0 + -25.25

Combine like terms: 0 + -25.25 = -25.25
-10x + x2 = -25.25

The x term is -10x.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10x + 25 + x2 = -25.25 + 25

Reorder the terms:
25 + -10x + x2 = -25.25 + 25

Combine like terms: -25.25 + 25 = -0.25
25 + -10x + x2 = -0.25

Factor a perfect square on the left side:
(x + -5)(x + -5) = -0.25

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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