5m^2+9m+20=0

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Solution for 5m^2+9m+20=0 equation:


Simplifying
5m2 + 9m + 20 = 0

Reorder the terms:
20 + 9m + 5m2 = 0

Solving
20 + 9m + 5m2 = 0

Solving for variable 'm'.

Begin completing the square.  Divide all terms by
5 the coefficient of the squared term: 

Divide each side by '5'.
4 + 1.8m + m2 = 0

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + 1.8m + -4 + m2 = 0 + -4

Reorder the terms:
4 + -4 + 1.8m + m2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 1.8m + m2 = 0 + -4
1.8m + m2 = 0 + -4

Combine like terms: 0 + -4 = -4
1.8m + m2 = -4

The m term is 1.8m.  Take half its coefficient (0.9).
Square it (0.81) and add it to both sides.

Add '0.81' to each side of the equation.
1.8m + 0.81 + m2 = -4 + 0.81

Reorder the terms:
0.81 + 1.8m + m2 = -4 + 0.81

Combine like terms: -4 + 0.81 = -3.19
0.81 + 1.8m + m2 = -3.19

Factor a perfect square on the left side:
(m + 0.9)(m + 0.9) = -3.19

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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