(k^2+2)-(5k^2-5k+7)=

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Solution for (k^2+2)-(5k^2-5k+7)= equation:


Simplifying
(k2 + 2) + -1(5k2 + -5k + 7) = 0

Reorder the terms:
(2 + k2) + -1(5k2 + -5k + 7) = 0

Remove parenthesis around (2 + k2)
2 + k2 + -1(5k2 + -5k + 7) = 0

Reorder the terms:
2 + k2 + -1(7 + -5k + 5k2) = 0
2 + k2 + (7 * -1 + -5k * -1 + 5k2 * -1) = 0
2 + k2 + (-7 + 5k + -5k2) = 0

Reorder the terms:
2 + -7 + 5k + k2 + -5k2 = 0

Combine like terms: 2 + -7 = -5
-5 + 5k + k2 + -5k2 = 0

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

Solving
-5 + 5k + -4k2 = 0

Solving for variable 'k'.

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

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

Move the constant term to the right:

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

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

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

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

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 = -1.25 + 0.390625

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

Combine like terms: -1.25 + 0.390625 = -0.859375
0.390625 + -1.25k + k2 = -0.859375

Factor a perfect square on the left side:
(k + -0.625)(k + -0.625) = -0.859375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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