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Simplifying A2 + -4A + 225 = 0 Reorder the terms: 225 + -4A + A2 = 0 Solving 225 + -4A + A2 = 0 Solving for variable 'A'. Begin completing the square. Move the constant term to the right: Add '-225' to each side of the equation. 225 + -4A + -225 + A2 = 0 + -225 Reorder the terms: 225 + -225 + -4A + A2 = 0 + -225 Combine like terms: 225 + -225 = 0 0 + -4A + A2 = 0 + -225 -4A + A2 = 0 + -225 Combine like terms: 0 + -225 = -225 -4A + A2 = -225 The A term is -4A. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4A + 4 + A2 = -225 + 4 Reorder the terms: 4 + -4A + A2 = -225 + 4 Combine like terms: -225 + 4 = -221 4 + -4A + A2 = -221 Factor a perfect square on the left side: (A + -2)(A + -2) = -221 Can't calculate square root of the right side. The solution to this equation could not be determined.
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