(5t^2-2t+7)+(-t^2+6t-4)=

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Solution for (5t^2-2t+7)+(-t^2+6t-4)= equation:


Simplifying
(5t2 + -2t + 7) + (-1t2 + 6t + -4) = 0

Reorder the terms:
(7 + -2t + 5t2) + (-1t2 + 6t + -4) = 0

Remove parenthesis around (7 + -2t + 5t2)
7 + -2t + 5t2 + (-1t2 + 6t + -4) = 0

Reorder the terms:
7 + -2t + 5t2 + (-4 + 6t + -1t2) = 0

Remove parenthesis around (-4 + 6t + -1t2)
7 + -2t + 5t2 + -4 + 6t + -1t2 = 0

Reorder the terms:
7 + -4 + -2t + 6t + 5t2 + -1t2 = 0

Combine like terms: 7 + -4 = 3
3 + -2t + 6t + 5t2 + -1t2 = 0

Combine like terms: -2t + 6t = 4t
3 + 4t + 5t2 + -1t2 = 0

Combine like terms: 5t2 + -1t2 = 4t2
3 + 4t + 4t2 = 0

Solving
3 + 4t + 4t2 = 0

Solving for variable 't'.

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

Divide each side by '4'.
0.75 + t + t2 = 0

Move the constant term to the right:

Add '-0.75' to each side of the equation.
0.75 + t + -0.75 + t2 = 0 + -0.75

Reorder the terms:
0.75 + -0.75 + t + t2 = 0 + -0.75

Combine like terms: 0.75 + -0.75 = 0.00
0.00 + t + t2 = 0 + -0.75
t + t2 = 0 + -0.75

Combine like terms: 0 + -0.75 = -0.75
t + t2 = -0.75

The t term is t.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + t2 = -0.75 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + t2 = -0.75 + 0.25

Combine like terms: -0.75 + 0.25 = -0.5
1.25 + t2 = -0.5

Factor a perfect square on the left side:
(t + 0.5)(t + 0.5) = -0.5

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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