2a(-5-3a)=10

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Solution for 2a(-5-3a)=10 equation:


Simplifying
2a(-5 + -3a) = 10
(-5 * 2a + -3a * 2a) = 10
(-10a + -6a2) = 10

Solving
-10a + -6a2 = 10

Solving for variable 'a'.

Reorder the terms:
-10 + -10a + -6a2 = 10 + -10

Combine like terms: 10 + -10 = 0
-10 + -10a + -6a2 = 0

Factor out the Greatest Common Factor (GCF), '-2'.
-2(5 + 5a + 3a2) = 0

Ignore the factor -2.

Subproblem 1

Set the factor '(5 + 5a + 3a2)' equal to zero and attempt to solve: Simplifying 5 + 5a + 3a2 = 0 Solving 5 + 5a + 3a2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 1.666666667 + 1.666666667a + a2 = 0 Move the constant term to the right: Add '-1.666666667' to each side of the equation. 1.666666667 + 1.666666667a + -1.666666667 + a2 = 0 + -1.666666667 Reorder the terms: 1.666666667 + -1.666666667 + 1.666666667a + a2 = 0 + -1.666666667 Combine like terms: 1.666666667 + -1.666666667 = 0.000000000 0.000000000 + 1.666666667a + a2 = 0 + -1.666666667 1.666666667a + a2 = 0 + -1.666666667 Combine like terms: 0 + -1.666666667 = -1.666666667 1.666666667a + a2 = -1.666666667 The a term is 1.666666667a. Take half its coefficient (0.8333333335). Square it (0.6944444447) and add it to both sides. Add '0.6944444447' to each side of the equation. 1.666666667a + 0.6944444447 + a2 = -1.666666667 + 0.6944444447 Reorder the terms: 0.6944444447 + 1.666666667a + a2 = -1.666666667 + 0.6944444447 Combine like terms: -1.666666667 + 0.6944444447 = -0.9722222223 0.6944444447 + 1.666666667a + a2 = -0.9722222223 Factor a perfect square on the left side: (a + 0.8333333335)(a + 0.8333333335) = -0.9722222223 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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