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Simplifying 3m2 + 10m + 21 = 0 Reorder the terms: 21 + 10m + 3m2 = 0 Solving 21 + 10m + 3m2 = 0 Solving for variable 'm'. Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 7 + 3.333333333m + m2 = 0 Move the constant term to the right: Add '-7' to each side of the equation. 7 + 3.333333333m + -7 + m2 = 0 + -7 Reorder the terms: 7 + -7 + 3.333333333m + m2 = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 3.333333333m + m2 = 0 + -7 3.333333333m + m2 = 0 + -7 Combine like terms: 0 + -7 = -7 3.333333333m + m2 = -7 The m term is 3.333333333m. Take half its coefficient (1.666666667). Square it (2.777777779) and add it to both sides. Add '2.777777779' to each side of the equation. 3.333333333m + 2.777777779 + m2 = -7 + 2.777777779 Reorder the terms: 2.777777779 + 3.333333333m + m2 = -7 + 2.777777779 Combine like terms: -7 + 2.777777779 = -4.222222221 2.777777779 + 3.333333333m + m2 = -4.222222221 Factor a perfect square on the left side: (m + 1.666666667)(m + 1.666666667) = -4.222222221 Can't calculate square root of the right side. The solution to this equation could not be determined.
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