q^2-8q+30=0

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Solution for q^2-8q+30=0 equation:


Simplifying
q2 + -8q + 30 = 0

Reorder the terms:
30 + -8q + q2 = 0

Solving
30 + -8q + q2 = 0

Solving for variable 'q'.

Begin completing the square.

Move the constant term to the right:

Add '-30' to each side of the equation.
30 + -8q + -30 + q2 = 0 + -30

Reorder the terms:
30 + -30 + -8q + q2 = 0 + -30

Combine like terms: 30 + -30 = 0
0 + -8q + q2 = 0 + -30
-8q + q2 = 0 + -30

Combine like terms: 0 + -30 = -30
-8q + q2 = -30

The q term is -8q.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8q + 16 + q2 = -30 + 16

Reorder the terms:
16 + -8q + q2 = -30 + 16

Combine like terms: -30 + 16 = -14
16 + -8q + q2 = -14

Factor a perfect square on the left side:
(q + -4)(q + -4) = -14

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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