(t^2-4t-5)+(6t^2-7t+3)=

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Solution for (t^2-4t-5)+(6t^2-7t+3)= equation:


Simplifying
(t2 + -4t + -5) + (6t2 + -7t + 3) = 0

Reorder the terms:
(-5 + -4t + t2) + (6t2 + -7t + 3) = 0

Remove parenthesis around (-5 + -4t + t2)
-5 + -4t + t2 + (6t2 + -7t + 3) = 0

Reorder the terms:
-5 + -4t + t2 + (3 + -7t + 6t2) = 0

Remove parenthesis around (3 + -7t + 6t2)
-5 + -4t + t2 + 3 + -7t + 6t2 = 0

Reorder the terms:
-5 + 3 + -4t + -7t + t2 + 6t2 = 0

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

Combine like terms: -4t + -7t = -11t
-2 + -11t + t2 + 6t2 = 0

Combine like terms: t2 + 6t2 = 7t2
-2 + -11t + 7t2 = 0

Solving
-2 + -11t + 7t2 = 0

Solving for variable 't'.

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

Divide each side by '7'.
-0.2857142857 + -1.571428571t + t2 = 0

Move the constant term to the right:

Add '0.2857142857' to each side of the equation.
-0.2857142857 + -1.571428571t + 0.2857142857 + t2 = 0 + 0.2857142857

Reorder the terms:
-0.2857142857 + 0.2857142857 + -1.571428571t + t2 = 0 + 0.2857142857

Combine like terms: -0.2857142857 + 0.2857142857 = 0.0000000000
0.0000000000 + -1.571428571t + t2 = 0 + 0.2857142857
-1.571428571t + t2 = 0 + 0.2857142857

Combine like terms: 0 + 0.2857142857 = 0.2857142857
-1.571428571t + t2 = 0.2857142857

The t term is -1.571428571t.  Take half its coefficient (-0.7857142855).
Square it (0.6173469384) and add it to both sides.

Add '0.6173469384' to each side of the equation.
-1.571428571t + 0.6173469384 + t2 = 0.2857142857 + 0.6173469384

Reorder the terms:
0.6173469384 + -1.571428571t + t2 = 0.2857142857 + 0.6173469384

Combine like terms: 0.2857142857 + 0.6173469384 = 0.9030612241
0.6173469384 + -1.571428571t + t2 = 0.9030612241

Factor a perfect square on the left side:
(t + -0.7857142855)(t + -0.7857142855) = 0.9030612241

Calculate the square root of the right side: 0.950295335

Break this problem into two subproblems by setting 
(t + -0.7857142855) equal to 0.950295335 and -0.950295335.

Subproblem 1

t + -0.7857142855 = 0.950295335 Simplifying t + -0.7857142855 = 0.950295335 Reorder the terms: -0.7857142855 + t = 0.950295335 Solving -0.7857142855 + t = 0.950295335 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.7857142855' to each side of the equation. -0.7857142855 + 0.7857142855 + t = 0.950295335 + 0.7857142855 Combine like terms: -0.7857142855 + 0.7857142855 = 0.0000000000 0.0000000000 + t = 0.950295335 + 0.7857142855 t = 0.950295335 + 0.7857142855 Combine like terms: 0.950295335 + 0.7857142855 = 1.7360096205 t = 1.7360096205 Simplifying t = 1.7360096205

Subproblem 2

t + -0.7857142855 = -0.950295335 Simplifying t + -0.7857142855 = -0.950295335 Reorder the terms: -0.7857142855 + t = -0.950295335 Solving -0.7857142855 + t = -0.950295335 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.7857142855' to each side of the equation. -0.7857142855 + 0.7857142855 + t = -0.950295335 + 0.7857142855 Combine like terms: -0.7857142855 + 0.7857142855 = 0.0000000000 0.0000000000 + t = -0.950295335 + 0.7857142855 t = -0.950295335 + 0.7857142855 Combine like terms: -0.950295335 + 0.7857142855 = -0.1645810495 t = -0.1645810495 Simplifying t = -0.1645810495

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.7360096205, -0.1645810495}

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