8a+a^2=-75

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Solution for 8a+a^2=-75 equation:


Simplifying
8a + a2 = -75

Solving
8a + a2 = -75

Solving for variable 'a'.

Reorder the terms:
75 + 8a + a2 = -75 + 75

Combine like terms: -75 + 75 = 0
75 + 8a + a2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-75' to each side of the equation.
75 + 8a + -75 + a2 = 0 + -75

Reorder the terms:
75 + -75 + 8a + a2 = 0 + -75

Combine like terms: 75 + -75 = 0
0 + 8a + a2 = 0 + -75
8a + a2 = 0 + -75

Combine like terms: 0 + -75 = -75
8a + a2 = -75

The a term is 8a.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8a + 16 + a2 = -75 + 16

Reorder the terms:
16 + 8a + a2 = -75 + 16

Combine like terms: -75 + 16 = -59
16 + 8a + a2 = -59

Factor a perfect square on the left side:
(a + 4)(a + 4) = -59

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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