12+2t-0.25t^2=

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Solution for 12+2t-0.25t^2= equation:


Simplifying
12 + 2t + -0.25t2 = 0

Solving
12 + 2t + -0.25t2 = 0

Solving for variable 't'.

Begin completing the square.  Divide all terms by
-0.25 the coefficient of the squared term: 

Divide each side by '-0.25'.
-48 + -8t + t2 = 0

Move the constant term to the right:

Add '48' to each side of the equation.
-48 + -8t + 48 + t2 = 0 + 48

Reorder the terms:
-48 + 48 + -8t + t2 = 0 + 48

Combine like terms: -48 + 48 = 0
0 + -8t + t2 = 0 + 48
-8t + t2 = 0 + 48

Combine like terms: 0 + 48 = 48
-8t + t2 = 48

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 = 48 + 16

Reorder the terms:
16 + -8t + t2 = 48 + 16

Combine like terms: 48 + 16 = 64
16 + -8t + t2 = 64

Factor a perfect square on the left side:
(t + -4)(t + -4) = 64

Calculate the square root of the right side: 8

Break this problem into two subproblems by setting 
(t + -4) equal to 8 and -8.

Subproblem 1

t + -4 = 8 Simplifying t + -4 = 8 Reorder the terms: -4 + t = 8 Solving -4 + t = 8 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 = 8 + 4 Combine like terms: -4 + 4 = 0 0 + t = 8 + 4 t = 8 + 4 Combine like terms: 8 + 4 = 12 t = 12 Simplifying t = 12

Subproblem 2

t + -4 = -8 Simplifying t + -4 = -8 Reorder the terms: -4 + t = -8 Solving -4 + t = -8 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 = -8 + 4 Combine like terms: -4 + 4 = 0 0 + t = -8 + 4 t = -8 + 4 Combine like terms: -8 + 4 = -4 t = -4 Simplifying t = -4

Solution

The solution to the problem is based on the solutions from the subproblems. t = {12, -4}

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