(-3t^2+6t-7)+(4t^2+2t+1)=

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Solution for (-3t^2+6t-7)+(4t^2+2t+1)= equation:


Simplifying
(-3t2 + 6t + -7) + (4t2 + 2t + 1) = 0

Reorder the terms:
(-7 + 6t + -3t2) + (4t2 + 2t + 1) = 0

Remove parenthesis around (-7 + 6t + -3t2)
-7 + 6t + -3t2 + (4t2 + 2t + 1) = 0

Reorder the terms:
-7 + 6t + -3t2 + (1 + 2t + 4t2) = 0

Remove parenthesis around (1 + 2t + 4t2)
-7 + 6t + -3t2 + 1 + 2t + 4t2 = 0

Reorder the terms:
-7 + 1 + 6t + 2t + -3t2 + 4t2 = 0

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

Combine like terms: 6t + 2t = 8t
-6 + 8t + -3t2 + 4t2 = 0

Combine like terms: -3t2 + 4t2 = 1t2
-6 + 8t + 1t2 = 0

Solving
-6 + 8t + 1t2 = 0

Solving for variable 't'.

Begin completing the square.

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + 8t + 6 + t2 = 0 + 6

Reorder the terms:
-6 + 6 + 8t + t2 = 0 + 6

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

Combine like terms: 0 + 6 = 6
8t + t2 = 6

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 = 6 + 16

Reorder the terms:
16 + 8t + t2 = 6 + 16

Combine like terms: 6 + 16 = 22
16 + 8t + t2 = 22

Factor a perfect square on the left side:
(t + 4)(t + 4) = 22

Calculate the square root of the right side: 4.69041576

Break this problem into two subproblems by setting 
(t + 4) equal to 4.69041576 and -4.69041576.

Subproblem 1

t + 4 = 4.69041576 Simplifying t + 4 = 4.69041576 Reorder the terms: 4 + t = 4.69041576 Solving 4 + t = 4.69041576 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 = 4.69041576 + -4 Combine like terms: 4 + -4 = 0 0 + t = 4.69041576 + -4 t = 4.69041576 + -4 Combine like terms: 4.69041576 + -4 = 0.69041576 t = 0.69041576 Simplifying t = 0.69041576

Subproblem 2

t + 4 = -4.69041576 Simplifying t + 4 = -4.69041576 Reorder the terms: 4 + t = -4.69041576 Solving 4 + t = -4.69041576 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 = -4.69041576 + -4 Combine like terms: 4 + -4 = 0 0 + t = -4.69041576 + -4 t = -4.69041576 + -4 Combine like terms: -4.69041576 + -4 = -8.69041576 t = -8.69041576 Simplifying t = -8.69041576

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.69041576, -8.69041576}

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