-0.3t^2+60t+45=

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Solution for -0.3t^2+60t+45= equation:


Simplifying
-0.3t2 + 60t + 45 = 0

Reorder the terms:
45 + 60t + -0.3t2 = 0

Solving
45 + 60t + -0.3t2 = 0

Solving for variable 't'.

Begin completing the square.  Divide all terms by
-0.3 the coefficient of the squared term: 

Divide each side by '-0.3'.
-150 + -200t + t2 = 0

Move the constant term to the right:

Add '150' to each side of the equation.
-150 + -200t + 150 + t2 = 0 + 150

Reorder the terms:
-150 + 150 + -200t + t2 = 0 + 150

Combine like terms: -150 + 150 = 0
0 + -200t + t2 = 0 + 150
-200t + t2 = 0 + 150

Combine like terms: 0 + 150 = 150
-200t + t2 = 150

The t term is -200t.  Take half its coefficient (-100).
Square it (10000) and add it to both sides.

Add '10000' to each side of the equation.
-200t + 10000 + t2 = 150 + 10000

Reorder the terms:
10000 + -200t + t2 = 150 + 10000

Combine like terms: 150 + 10000 = 10150
10000 + -200t + t2 = 10150

Factor a perfect square on the left side:
(t + -100)(t + -100) = 10150

Calculate the square root of the right side: 100.747208398

Break this problem into two subproblems by setting 
(t + -100) equal to 100.747208398 and -100.747208398.

Subproblem 1

t + -100 = 100.747208398 Simplifying t + -100 = 100.747208398 Reorder the terms: -100 + t = 100.747208398 Solving -100 + t = 100.747208398 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '100' to each side of the equation. -100 + 100 + t = 100.747208398 + 100 Combine like terms: -100 + 100 = 0 0 + t = 100.747208398 + 100 t = 100.747208398 + 100 Combine like terms: 100.747208398 + 100 = 200.747208398 t = 200.747208398 Simplifying t = 200.747208398

Subproblem 2

t + -100 = -100.747208398 Simplifying t + -100 = -100.747208398 Reorder the terms: -100 + t = -100.747208398 Solving -100 + t = -100.747208398 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '100' to each side of the equation. -100 + 100 + t = -100.747208398 + 100 Combine like terms: -100 + 100 = 0 0 + t = -100.747208398 + 100 t = -100.747208398 + 100 Combine like terms: -100.747208398 + 100 = -0.747208398 t = -0.747208398 Simplifying t = -0.747208398

Solution

The solution to the problem is based on the solutions from the subproblems. t = {200.747208398, -0.747208398}

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