r-4(3r+2)r=7

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Solution for r-4(3r+2)r=7 equation:


Simplifying
r + -4(3r + 2) * r = 7

Reorder the terms:
r + -4(2 + 3r) * r = 7

Reorder the terms for easier multiplication:
r + -4r(2 + 3r) = 7
r + (2 * -4r + 3r * -4r) = 7
r + (-8r + -12r2) = 7

Combine like terms: r + -8r = -7r
-7r + -12r2 = 7

Solving
-7r + -12r2 = 7

Solving for variable 'r'.

Reorder the terms:
-7 + -7r + -12r2 = 7 + -7

Combine like terms: 7 + -7 = 0
-7 + -7r + -12r2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(7 + 7r + 12r2) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(7 + 7r + 12r2)' equal to zero and attempt to solve: Simplifying 7 + 7r + 12r2 = 0 Solving 7 + 7r + 12r2 = 0 Begin completing the square. Divide all terms by 12 the coefficient of the squared term: Divide each side by '12'. 0.5833333333 + 0.5833333333r + r2 = 0 Move the constant term to the right: Add '-0.5833333333' to each side of the equation. 0.5833333333 + 0.5833333333r + -0.5833333333 + r2 = 0 + -0.5833333333 Reorder the terms: 0.5833333333 + -0.5833333333 + 0.5833333333r + r2 = 0 + -0.5833333333 Combine like terms: 0.5833333333 + -0.5833333333 = 0.0000000000 0.0000000000 + 0.5833333333r + r2 = 0 + -0.5833333333 0.5833333333r + r2 = 0 + -0.5833333333 Combine like terms: 0 + -0.5833333333 = -0.5833333333 0.5833333333r + r2 = -0.5833333333 The r term is 0.5833333333r. Take half its coefficient (0.2916666667). Square it (0.08506944446) and add it to both sides. Add '0.08506944446' to each side of the equation. 0.5833333333r + 0.08506944446 + r2 = -0.5833333333 + 0.08506944446 Reorder the terms: 0.08506944446 + 0.5833333333r + r2 = -0.5833333333 + 0.08506944446 Combine like terms: -0.5833333333 + 0.08506944446 = -0.49826388884 0.08506944446 + 0.5833333333r + r2 = -0.49826388884 Factor a perfect square on the left side: (r + 0.2916666667)(r + 0.2916666667) = -0.49826388884 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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