(-4t^2+7t-2)+(5t^2+3t+1)=

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Solution for (-4t^2+7t-2)+(5t^2+3t+1)= equation:


Simplifying
(-4t2 + 7t + -2) + (5t2 + 3t + 1) = 0

Reorder the terms:
(-2 + 7t + -4t2) + (5t2 + 3t + 1) = 0

Remove parenthesis around (-2 + 7t + -4t2)
-2 + 7t + -4t2 + (5t2 + 3t + 1) = 0

Reorder the terms:
-2 + 7t + -4t2 + (1 + 3t + 5t2) = 0

Remove parenthesis around (1 + 3t + 5t2)
-2 + 7t + -4t2 + 1 + 3t + 5t2 = 0

Reorder the terms:
-2 + 1 + 7t + 3t + -4t2 + 5t2 = 0

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

Combine like terms: 7t + 3t = 10t
-1 + 10t + -4t2 + 5t2 = 0

Combine like terms: -4t2 + 5t2 = 1t2
-1 + 10t + 1t2 = 0

Solving
-1 + 10t + 1t2 = 0

Solving for variable 't'.

Begin completing the square.

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + 10t + 1 + t2 = 0 + 1

Reorder the terms:
-1 + 1 + 10t + t2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 10t + t2 = 0 + 1
10t + t2 = 0 + 1

Combine like terms: 0 + 1 = 1
10t + t2 = 1

The t term is 10t.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10t + 25 + t2 = 1 + 25

Reorder the terms:
25 + 10t + t2 = 1 + 25

Combine like terms: 1 + 25 = 26
25 + 10t + t2 = 26

Factor a perfect square on the left side:
(t + 5)(t + 5) = 26

Calculate the square root of the right side: 5.099019514

Break this problem into two subproblems by setting 
(t + 5) equal to 5.099019514 and -5.099019514.

Subproblem 1

t + 5 = 5.099019514 Simplifying t + 5 = 5.099019514 Reorder the terms: 5 + t = 5.099019514 Solving 5 + t = 5.099019514 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + t = 5.099019514 + -5 Combine like terms: 5 + -5 = 0 0 + t = 5.099019514 + -5 t = 5.099019514 + -5 Combine like terms: 5.099019514 + -5 = 0.099019514 t = 0.099019514 Simplifying t = 0.099019514

Subproblem 2

t + 5 = -5.099019514 Simplifying t + 5 = -5.099019514 Reorder the terms: 5 + t = -5.099019514 Solving 5 + t = -5.099019514 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + t = -5.099019514 + -5 Combine like terms: 5 + -5 = 0 0 + t = -5.099019514 + -5 t = -5.099019514 + -5 Combine like terms: -5.099019514 + -5 = -10.099019514 t = -10.099019514 Simplifying t = -10.099019514

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.099019514, -10.099019514}

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