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Simplifying 25 + -2a + a2 = 0 Solving 25 + -2a + a2 = 0 Solving for variable 'a'. Begin completing the square. Move the constant term to the right: Add '-25' to each side of the equation. 25 + -2a + -25 + a2 = 0 + -25 Reorder the terms: 25 + -25 + -2a + a2 = 0 + -25 Combine like terms: 25 + -25 = 0 0 + -2a + a2 = 0 + -25 -2a + a2 = 0 + -25 Combine like terms: 0 + -25 = -25 -2a + a2 = -25 The a term is -2a. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2a + 1 + a2 = -25 + 1 Reorder the terms: 1 + -2a + a2 = -25 + 1 Combine like terms: -25 + 1 = -24 1 + -2a + a2 = -24 Factor a perfect square on the left side: (a + -1)(a + -1) = -24 Can't calculate square root of the right side. The solution to this equation could not be determined.
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