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Simplifying 7x + -15 + -36x2 = 0 Reorder the terms: -15 + 7x + -36x2 = 0 Solving -15 + 7x + -36x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -36 the coefficient of the squared term: Divide each side by '-36'. 0.4166666667 + -0.1944444444x + x2 = 0 Move the constant term to the right: Add '-0.4166666667' to each side of the equation. 0.4166666667 + -0.1944444444x + -0.4166666667 + x2 = 0 + -0.4166666667 Reorder the terms: 0.4166666667 + -0.4166666667 + -0.1944444444x + x2 = 0 + -0.4166666667 Combine like terms: 0.4166666667 + -0.4166666667 = 0.0000000000 0.0000000000 + -0.1944444444x + x2 = 0 + -0.4166666667 -0.1944444444x + x2 = 0 + -0.4166666667 Combine like terms: 0 + -0.4166666667 = -0.4166666667 -0.1944444444x + x2 = -0.4166666667 The x term is -0.1944444444x. Take half its coefficient (-0.0972222222). Square it (0.009452160490) and add it to both sides. Add '0.009452160490' to each side of the equation. -0.1944444444x + 0.009452160490 + x2 = -0.4166666667 + 0.009452160490 Reorder the terms: 0.009452160490 + -0.1944444444x + x2 = -0.4166666667 + 0.009452160490 Combine like terms: -0.4166666667 + 0.009452160490 = -0.40721450621 0.009452160490 + -0.1944444444x + x2 = -0.40721450621 Factor a perfect square on the left side: (x + -0.0972222222)(x + -0.0972222222) = -0.40721450621 Can't calculate square root of the right side. The solution to this equation could not be determined.
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