7X^2-28X=-63

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Solution for 7X^2-28X=-63 equation:


Simplifying
7X2 + -28X = -63

Reorder the terms:
-28X + 7X2 = -63

Solving
-28X + 7X2 = -63

Solving for variable 'X'.

Reorder the terms:
63 + -28X + 7X2 = -63 + 63

Combine like terms: -63 + 63 = 0
63 + -28X + 7X2 = 0

Factor out the Greatest Common Factor (GCF), '7'.
7(9 + -4X + X2) = 0

Ignore the factor 7.

Subproblem 1

Set the factor '(9 + -4X + X2)' equal to zero and attempt to solve: Simplifying 9 + -4X + X2 = 0 Solving 9 + -4X + X2 = 0 Begin completing the square. Move the constant term to the right: Add '-9' to each side of the equation. 9 + -4X + -9 + X2 = 0 + -9 Reorder the terms: 9 + -9 + -4X + X2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -4X + X2 = 0 + -9 -4X + X2 = 0 + -9 Combine like terms: 0 + -9 = -9 -4X + X2 = -9 The X term is -4X. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4X + 4 + X2 = -9 + 4 Reorder the terms: 4 + -4X + X2 = -9 + 4 Combine like terms: -9 + 4 = -5 4 + -4X + X2 = -5 Factor a perfect square on the left side: (X + -2)(X + -2) = -5 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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