4k^2+7=5k

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Solution for 4k^2+7=5k equation:


Simplifying
4k2 + 7 = 5k

Reorder the terms:
7 + 4k2 = 5k

Solving
7 + 4k2 = 5k

Solving for variable 'k'.

Reorder the terms:
7 + -5k + 4k2 = 5k + -5k

Combine like terms: 5k + -5k = 0
7 + -5k + 4k2 = 0

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

Divide each side by '4'.
1.75 + -1.25k + k2 = 0

Move the constant term to the right:

Add '-1.75' to each side of the equation.
1.75 + -1.25k + -1.75 + k2 = 0 + -1.75

Reorder the terms:
1.75 + -1.75 + -1.25k + k2 = 0 + -1.75

Combine like terms: 1.75 + -1.75 = 0.00
0.00 + -1.25k + k2 = 0 + -1.75
-1.25k + k2 = 0 + -1.75

Combine like terms: 0 + -1.75 = -1.75
-1.25k + k2 = -1.75

The k term is -1.25k.  Take half its coefficient (-0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
-1.25k + 0.390625 + k2 = -1.75 + 0.390625

Reorder the terms:
0.390625 + -1.25k + k2 = -1.75 + 0.390625

Combine like terms: -1.75 + 0.390625 = -1.359375
0.390625 + -1.25k + k2 = -1.359375

Factor a perfect square on the left side:
(k + -0.625)(k + -0.625) = -1.359375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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