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

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


Simplifying
(-4t2 + 2t + -7) + 3t2 + 5t + 6 = 0

Reorder the terms:
(-7 + 2t + -4t2) + 3t2 + 5t + 6 = 0

Remove parenthesis around (-7 + 2t + -4t2)
-7 + 2t + -4t2 + 3t2 + 5t + 6 = 0

Reorder the terms:
-7 + 6 + 2t + 5t + -4t2 + 3t2 = 0

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

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

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

Solving
-1 + 7t + -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 + -7t + t2 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + -7t + -1 + t2 = 0 + -1

Reorder the terms:
1 + -1 + -7t + t2 = 0 + -1

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

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

The t term is -7t.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7t + 12.25 + t2 = -1 + 12.25

Reorder the terms:
12.25 + -7t + t2 = -1 + 12.25

Combine like terms: -1 + 12.25 = 11.25
12.25 + -7t + t2 = 11.25

Factor a perfect square on the left side:
(t + -3.5)(t + -3.5) = 11.25

Calculate the square root of the right side: 3.354101966

Break this problem into two subproblems by setting 
(t + -3.5) equal to 3.354101966 and -3.354101966.

Subproblem 1

t + -3.5 = 3.354101966 Simplifying t + -3.5 = 3.354101966 Reorder the terms: -3.5 + t = 3.354101966 Solving -3.5 + t = 3.354101966 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + t = 3.354101966 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + t = 3.354101966 + 3.5 t = 3.354101966 + 3.5 Combine like terms: 3.354101966 + 3.5 = 6.854101966 t = 6.854101966 Simplifying t = 6.854101966

Subproblem 2

t + -3.5 = -3.354101966 Simplifying t + -3.5 = -3.354101966 Reorder the terms: -3.5 + t = -3.354101966 Solving -3.5 + t = -3.354101966 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + t = -3.354101966 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + t = -3.354101966 + 3.5 t = -3.354101966 + 3.5 Combine like terms: -3.354101966 + 3.5 = 0.145898034 t = 0.145898034 Simplifying t = 0.145898034

Solution

The solution to the problem is based on the solutions from the subproblems. t = {6.854101966, 0.145898034}

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