4k^2+10k=-7

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Solution for 4k^2+10k=-7 equation:


Simplifying
4k2 + 10k = -7

Reorder the terms:
10k + 4k2 = -7

Solving
10k + 4k2 = -7

Solving for variable 'k'.

Reorder the terms:
7 + 10k + 4k2 = -7 + 7

Combine like terms: -7 + 7 = 0
7 + 10k + 4k2 = 0

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

Divide each side by '4'.
1.75 + 2.5k + k2 = 0

Move the constant term to the right:

Add '-1.75' to each side of the equation.
1.75 + 2.5k + -1.75 + k2 = 0 + -1.75

Reorder the terms:
1.75 + -1.75 + 2.5k + k2 = 0 + -1.75

Combine like terms: 1.75 + -1.75 = 0.00
0.00 + 2.5k + k2 = 0 + -1.75
2.5k + k2 = 0 + -1.75

Combine like terms: 0 + -1.75 = -1.75
2.5k + k2 = -1.75

The k term is 2.5k.  Take half its coefficient (1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
2.5k + 1.5625 + k2 = -1.75 + 1.5625

Reorder the terms:
1.5625 + 2.5k + k2 = -1.75 + 1.5625

Combine like terms: -1.75 + 1.5625 = -0.1875
1.5625 + 2.5k + k2 = -0.1875

Factor a perfect square on the left side:
(k + 1.25)(k + 1.25) = -0.1875

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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