4a^2+7a=-6

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Solution for 4a^2+7a=-6 equation:


Simplifying
4a2 + 7a = -6

Reorder the terms:
7a + 4a2 = -6

Solving
7a + 4a2 = -6

Solving for variable 'a'.

Reorder the terms:
6 + 7a + 4a2 = -6 + 6

Combine like terms: -6 + 6 = 0
6 + 7a + 4a2 = 0

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

Divide each side by '4'.
1.5 + 1.75a + a2 = 0

Move the constant term to the right:

Add '-1.5' to each side of the equation.
1.5 + 1.75a + -1.5 + a2 = 0 + -1.5

Reorder the terms:
1.5 + -1.5 + 1.75a + a2 = 0 + -1.5

Combine like terms: 1.5 + -1.5 = 0.0
0.0 + 1.75a + a2 = 0 + -1.5
1.75a + a2 = 0 + -1.5

Combine like terms: 0 + -1.5 = -1.5
1.75a + a2 = -1.5

The a term is 1.75a.  Take half its coefficient (0.875).
Square it (0.765625) and add it to both sides.

Add '0.765625' to each side of the equation.
1.75a + 0.765625 + a2 = -1.5 + 0.765625

Reorder the terms:
0.765625 + 1.75a + a2 = -1.5 + 0.765625

Combine like terms: -1.5 + 0.765625 = -0.734375
0.765625 + 1.75a + a2 = -0.734375

Factor a perfect square on the left side:
(a + 0.875)(a + 0.875) = -0.734375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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