a^2+15a+75=

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Solution for a^2+15a+75= equation:


Simplifying
a2 + 15a + 75 = 0

Reorder the terms:
75 + 15a + a2 = 0

Solving
75 + 15a + a2 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '-75' to each side of the equation.
75 + 15a + -75 + a2 = 0 + -75

Reorder the terms:
75 + -75 + 15a + a2 = 0 + -75

Combine like terms: 75 + -75 = 0
0 + 15a + a2 = 0 + -75
15a + a2 = 0 + -75

Combine like terms: 0 + -75 = -75
15a + a2 = -75

The a term is 15a.  Take half its coefficient (7.5).
Square it (56.25) and add it to both sides.

Add '56.25' to each side of the equation.
15a + 56.25 + a2 = -75 + 56.25

Reorder the terms:
56.25 + 15a + a2 = -75 + 56.25

Combine like terms: -75 + 56.25 = -18.75
56.25 + 15a + a2 = -18.75

Factor a perfect square on the left side:
(a + 7.5)(a + 7.5) = -18.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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