x*(4x-7)=-12

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Solution for x*(4x-7)=-12 equation:


Simplifying
x(4x + -7) = -12

Reorder the terms:
x(-7 + 4x) = -12
(-7 * x + 4x * x) = -12
(-7x + 4x2) = -12

Solving
-7x + 4x2 = -12

Solving for variable 'x'.

Reorder the terms:
12 + -7x + 4x2 = -12 + 12

Combine like terms: -12 + 12 = 0
12 + -7x + 4x2 = 0

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

Divide each side by '4'.
3 + -1.75x + x2 = 0

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + -1.75x + -3 + x2 = 0 + -3

Reorder the terms:
3 + -3 + -1.75x + x2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1.75x + x2 = 0 + -3
-1.75x + x2 = 0 + -3

Combine like terms: 0 + -3 = -3
-1.75x + x2 = -3

The x term is -1.75x.  Take half its coefficient (-0.875).
Square it (0.765625) and add it to both sides.

Add '0.765625' to each side of the equation.
-1.75x + 0.765625 + x2 = -3 + 0.765625

Reorder the terms:
0.765625 + -1.75x + x2 = -3 + 0.765625

Combine like terms: -3 + 0.765625 = -2.234375
0.765625 + -1.75x + x2 = -2.234375

Factor a perfect square on the left side:
(x + -0.875)(x + -0.875) = -2.234375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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