3a-2=10a^2+7

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Solution for 3a-2=10a^2+7 equation:


Simplifying
3a + -2 = 10a2 + 7

Reorder the terms:
-2 + 3a = 10a2 + 7

Reorder the terms:
-2 + 3a = 7 + 10a2

Solving
-2 + 3a = 7 + 10a2

Solving for variable 'a'.

Reorder the terms:
-2 + -7 + 3a + -10a2 = 7 + 10a2 + -7 + -10a2

Combine like terms: -2 + -7 = -9
-9 + 3a + -10a2 = 7 + 10a2 + -7 + -10a2

Reorder the terms:
-9 + 3a + -10a2 = 7 + -7 + 10a2 + -10a2

Combine like terms: 7 + -7 = 0
-9 + 3a + -10a2 = 0 + 10a2 + -10a2
-9 + 3a + -10a2 = 10a2 + -10a2

Combine like terms: 10a2 + -10a2 = 0
-9 + 3a + -10a2 = 0

Begin completing the square.  Divide all terms by
-10 the coefficient of the squared term: 

Divide each side by '-10'.
0.9 + -0.3a + a2 = 0

Move the constant term to the right:

Add '-0.9' to each side of the equation.
0.9 + -0.3a + -0.9 + a2 = 0 + -0.9

Reorder the terms:
0.9 + -0.9 + -0.3a + a2 = 0 + -0.9

Combine like terms: 0.9 + -0.9 = 0.0
0.0 + -0.3a + a2 = 0 + -0.9
-0.3a + a2 = 0 + -0.9

Combine like terms: 0 + -0.9 = -0.9
-0.3a + a2 = -0.9

The a term is -0.3a.  Take half its coefficient (-0.15).
Square it (0.0225) and add it to both sides.

Add '0.0225' to each side of the equation.
-0.3a + 0.0225 + a2 = -0.9 + 0.0225

Reorder the terms:
0.0225 + -0.3a + a2 = -0.9 + 0.0225

Combine like terms: -0.9 + 0.0225 = -0.8775
0.0225 + -0.3a + a2 = -0.8775

Factor a perfect square on the left side:
(a + -0.15)(a + -0.15) = -0.8775

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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