(t^2-6t+7)+(-3t^2+4t+2)=

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Solution for (t^2-6t+7)+(-3t^2+4t+2)= equation:


Simplifying
(t2 + -6t + 7) + (-3t2 + 4t + 2) = 0

Reorder the terms:
(7 + -6t + t2) + (-3t2 + 4t + 2) = 0

Remove parenthesis around (7 + -6t + t2)
7 + -6t + t2 + (-3t2 + 4t + 2) = 0

Reorder the terms:
7 + -6t + t2 + (2 + 4t + -3t2) = 0

Remove parenthesis around (2 + 4t + -3t2)
7 + -6t + t2 + 2 + 4t + -3t2 = 0

Reorder the terms:
7 + 2 + -6t + 4t + t2 + -3t2 = 0

Combine like terms: 7 + 2 = 9
9 + -6t + 4t + t2 + -3t2 = 0

Combine like terms: -6t + 4t = -2t
9 + -2t + t2 + -3t2 = 0

Combine like terms: t2 + -3t2 = -2t2
9 + -2t + -2t2 = 0

Solving
9 + -2t + -2t2 = 0

Solving for variable 't'.

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
-4.5 + t + t2 = 0

Move the constant term to the right:

Add '4.5' to each side of the equation.
-4.5 + t + 4.5 + t2 = 0 + 4.5

Reorder the terms:
-4.5 + 4.5 + t + t2 = 0 + 4.5

Combine like terms: -4.5 + 4.5 = 0.0
0.0 + t + t2 = 0 + 4.5
t + t2 = 0 + 4.5

Combine like terms: 0 + 4.5 = 4.5
t + t2 = 4.5

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 = 4.5 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + t2 = 4.5 + 0.25

Combine like terms: 4.5 + 0.25 = 4.75
1.25 + t2 = 4.75

Factor a perfect square on the left side:
(t + 0.5)(t + 0.5) = 4.75

Calculate the square root of the right side: 2.179449472

Break this problem into two subproblems by setting 
(t + 0.5) equal to 2.179449472 and -2.179449472.

Subproblem 1

t + 0.5 = 2.179449472 Simplifying t + 0.5 = 2.179449472 Reorder the terms: 0.5 + t = 2.179449472 Solving 0.5 + t = 2.179449472 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + t = 2.179449472 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + t = 2.179449472 + -0.5 t = 2.179449472 + -0.5 Combine like terms: 2.179449472 + -0.5 = 1.679449472 t = 1.679449472 Simplifying t = 1.679449472

Subproblem 2

t + 0.5 = -2.179449472 Simplifying t + 0.5 = -2.179449472 Reorder the terms: 0.5 + t = -2.179449472 Solving 0.5 + t = -2.179449472 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + t = -2.179449472 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + t = -2.179449472 + -0.5 t = -2.179449472 + -0.5 Combine like terms: -2.179449472 + -0.5 = -2.679449472 t = -2.679449472 Simplifying t = -2.679449472

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.679449472, -2.679449472}

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