(5x^2)-(4x-16)=

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Solution for (5x^2)-(4x-16)= equation:


Simplifying
(5x2) + -1(4x + -16) = 0

Reorder the terms:
(5x2) + -1(-16 + 4x) = 0
(5x2) + (-16 * -1 + 4x * -1) = 0
(5x2) + (16 + -4x) = 0

Reorder the terms:
16 + -4x + (5x2) = 0

Solving
16 + -4x + (5x2) = 0

Solving for variable 'x'.

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

Divide each side by '5'.
3.2 + -0.8x + x2 = 0

Move the constant term to the right:

Add '-3.2' to each side of the equation.
3.2 + -0.8x + -3.2 + x2 = 0 + -3.2

Reorder the terms:
3.2 + -3.2 + -0.8x + x2 = 0 + -3.2

Combine like terms: 3.2 + -3.2 = 0.0
0.0 + -0.8x + x2 = 0 + -3.2
-0.8x + x2 = 0 + -3.2

Combine like terms: 0 + -3.2 = -3.2
-0.8x + x2 = -3.2

The x term is -0.8x.  Take half its coefficient (-0.4).
Square it (0.16) and add it to both sides.

Add '0.16' to each side of the equation.
-0.8x + 0.16 + x2 = -3.2 + 0.16

Reorder the terms:
0.16 + -0.8x + x2 = -3.2 + 0.16

Combine like terms: -3.2 + 0.16 = -3.04
0.16 + -0.8x + x2 = -3.04

Factor a perfect square on the left side:
((x) + -0.4)((x) + -0.4) = -3.04

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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