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Simplifying 81x2 + -10x + 25 = 0 Reorder the terms: 25 + -10x + 81x2 = 0 Solving 25 + -10x + 81x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 81 the coefficient of the squared term: Divide each side by '81'. 0.3086419753 + -0.1234567901x + x2 = 0 Move the constant term to the right: Add '-0.3086419753' to each side of the equation. 0.3086419753 + -0.1234567901x + -0.3086419753 + x2 = 0 + -0.3086419753 Reorder the terms: 0.3086419753 + -0.3086419753 + -0.1234567901x + x2 = 0 + -0.3086419753 Combine like terms: 0.3086419753 + -0.3086419753 = 0.0000000000 0.0000000000 + -0.1234567901x + x2 = 0 + -0.3086419753 -0.1234567901x + x2 = 0 + -0.3086419753 Combine like terms: 0 + -0.3086419753 = -0.3086419753 -0.1234567901x + x2 = -0.3086419753 The x term is -0.1234567901x. Take half its coefficient (-0.06172839505). Square it (0.003810394755) and add it to both sides. Add '0.003810394755' to each side of the equation. -0.1234567901x + 0.003810394755 + x2 = -0.3086419753 + 0.003810394755 Reorder the terms: 0.003810394755 + -0.1234567901x + x2 = -0.3086419753 + 0.003810394755 Combine like terms: -0.3086419753 + 0.003810394755 = -0.304831580545 0.003810394755 + -0.1234567901x + x2 = -0.304831580545 Factor a perfect square on the left side: (x + -0.06172839505)(x + -0.06172839505) = -0.304831580545 Can't calculate square root of the right side. The solution to this equation could not be determined.
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