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Simplifying (X * x * x) + -1(5 + -1x) + -8 = 0 Multiply X * x (xX * x) + -1(5 + -1x) + -8 = 0 Multiply xX * x (x2X) + -1(5 + -1x) + -8 = 0 x2X + -1(5 + -1x) + -8 = 0 x2X + (5 * -1 + -1x * -1) + -8 = 0 x2X + (-5 + 1x) + -8 = 0 Reorder the terms: -5 + -8 + 1x + x2X = 0 Combine like terms: -5 + -8 = -13 -13 + 1x + x2X = 0 Solving -13 + 1x + x2X = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by X the coefficient of the squared term: Divide each side by 'X'. -13X-1 + xX-1 + x2 = 0X-1 Move the constant term to the right: Add '13' to each side of the equation. -13X-1 + xX-1 + 13 + x2 = 13 + 0X-1 Reorder the terms: 13 + -13X-1 + xX-1 + x2 = 13 + 0X-1 Combine like terms: 13 + 0 = 13 13 + -13X-1 + xX-1 + x2 = 13 The x term is xX-1. Take half its coefficient (0.5X-1). Square it (0.25X-2) and add it to both sides. Add '0.25X-2' to each side of the equation. 13 + -13X-1 + X-2 + 0.25X-2 + x2 = 13 + 0.25X-2 Reorder the terms: 13 + X-2 + 0.25X-2 + -13X-1 + x2 = 13 + 0.25X-2 Combine like terms: X-2 + 0.25X-2 = 1.25X-2 13 + 1.25X-2 + -13X-1 + x2 = 13 + 0.25X-2 Factor a perfect square on the left side: (x + 0.5X-1)(x + 0.5X-1) = 13 + 0.25X-2 Can't calculate square root of the right side. The solution to this equation could not be determined.
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