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Simplifying 7x2 + 4 = -3x Reorder the terms: 4 + 7x2 = -3x Solving 4 + 7x2 = -3x Solving for variable 'x'. Reorder the terms: 4 + 3x + 7x2 = -3x + 3x Combine like terms: -3x + 3x = 0 4 + 3x + 7x2 = 0 Begin completing the square. Divide all terms by 7 the coefficient of the squared term: Divide each side by '7'. 0.5714285714 + 0.4285714286x + x2 = 0 Move the constant term to the right: Add '-0.5714285714' to each side of the equation. 0.5714285714 + 0.4285714286x + -0.5714285714 + x2 = 0 + -0.5714285714 Reorder the terms: 0.5714285714 + -0.5714285714 + 0.4285714286x + x2 = 0 + -0.5714285714 Combine like terms: 0.5714285714 + -0.5714285714 = 0.0000000000 0.0000000000 + 0.4285714286x + x2 = 0 + -0.5714285714 0.4285714286x + x2 = 0 + -0.5714285714 Combine like terms: 0 + -0.5714285714 = -0.5714285714 0.4285714286x + x2 = -0.5714285714 The x term is 0.4285714286x. Take half its coefficient (0.2142857143). Square it (0.04591836735) and add it to both sides. Add '0.04591836735' to each side of the equation. 0.4285714286x + 0.04591836735 + x2 = -0.5714285714 + 0.04591836735 Reorder the terms: 0.04591836735 + 0.4285714286x + x2 = -0.5714285714 + 0.04591836735 Combine like terms: -0.5714285714 + 0.04591836735 = -0.52551020405 0.04591836735 + 0.4285714286x + x2 = -0.52551020405 Factor a perfect square on the left side: (x + 0.2142857143)(x + 0.2142857143) = -0.52551020405 Can't calculate square root of the right side. The solution to this equation could not be determined.
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