-10-t(t-8)-2t=

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Solution for -10-t(t-8)-2t= equation:


Simplifying
-10 + -1t(t + -8) + -2t = 0

Reorder the terms:
-10 + -1t(-8 + t) + -2t = 0
-10 + (-8 * -1t + t * -1t) + -2t = 0
-10 + (8t + -1t2) + -2t = 0

Reorder the terms:
-10 + 8t + -2t + -1t2 = 0

Combine like terms: 8t + -2t = 6t
-10 + 6t + -1t2 = 0

Solving
-10 + 6t + -1t2 = 0

Solving for variable 't'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
10 + -6t + t2 = 0

Move the constant term to the right:

Add '-10' to each side of the equation.
10 + -6t + -10 + t2 = 0 + -10

Reorder the terms:
10 + -10 + -6t + t2 = 0 + -10

Combine like terms: 10 + -10 = 0
0 + -6t + t2 = 0 + -10
-6t + t2 = 0 + -10

Combine like terms: 0 + -10 = -10
-6t + t2 = -10

The t term is -6t.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6t + 9 + t2 = -10 + 9

Reorder the terms:
9 + -6t + t2 = -10 + 9

Combine like terms: -10 + 9 = -1
9 + -6t + t2 = -1

Factor a perfect square on the left side:
(t + -3)(t + -3) = -1

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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