(-7t^2+3t-2)+(6t^2+5t+1)=

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Solution for (-7t^2+3t-2)+(6t^2+5t+1)= equation:


Simplifying
(-7t2 + 3t + -2) + (6t2 + 5t + 1) = 0

Reorder the terms:
(-2 + 3t + -7t2) + (6t2 + 5t + 1) = 0

Remove parenthesis around (-2 + 3t + -7t2)
-2 + 3t + -7t2 + (6t2 + 5t + 1) = 0

Reorder the terms:
-2 + 3t + -7t2 + (1 + 5t + 6t2) = 0

Remove parenthesis around (1 + 5t + 6t2)
-2 + 3t + -7t2 + 1 + 5t + 6t2 = 0

Reorder the terms:
-2 + 1 + 3t + 5t + -7t2 + 6t2 = 0

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

Combine like terms: 3t + 5t = 8t
-1 + 8t + -7t2 + 6t2 = 0

Combine like terms: -7t2 + 6t2 = -1t2
-1 + 8t + -1t2 = 0

Solving
-1 + 8t + -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'.
1 + -8t + t2 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + -8t + -1 + t2 = 0 + -1

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

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

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

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

Add '16' to each side of the equation.
-8t + 16 + t2 = -1 + 16

Reorder the terms:
16 + -8t + t2 = -1 + 16

Combine like terms: -1 + 16 = 15
16 + -8t + t2 = 15

Factor a perfect square on the left side:
(t + -4)(t + -4) = 15

Calculate the square root of the right side: 3.872983346

Break this problem into two subproblems by setting 
(t + -4) equal to 3.872983346 and -3.872983346.

Subproblem 1

t + -4 = 3.872983346 Simplifying t + -4 = 3.872983346 Reorder the terms: -4 + t = 3.872983346 Solving -4 + t = 3.872983346 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + t = 3.872983346 + 4 Combine like terms: -4 + 4 = 0 0 + t = 3.872983346 + 4 t = 3.872983346 + 4 Combine like terms: 3.872983346 + 4 = 7.872983346 t = 7.872983346 Simplifying t = 7.872983346

Subproblem 2

t + -4 = -3.872983346 Simplifying t + -4 = -3.872983346 Reorder the terms: -4 + t = -3.872983346 Solving -4 + t = -3.872983346 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + t = -3.872983346 + 4 Combine like terms: -4 + 4 = 0 0 + t = -3.872983346 + 4 t = -3.872983346 + 4 Combine like terms: -3.872983346 + 4 = 0.127016654 t = 0.127016654 Simplifying t = 0.127016654

Solution

The solution to the problem is based on the solutions from the subproblems. t = {7.872983346, 0.127016654}

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