100=20t+4t^2

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Solution for 100=20t+4t^2 equation:


Simplifying
100 = 20t + 4t2

Solving
100 = 20t + 4t2

Solving for variable 't'.

Reorder the terms:
100 + -20t + -4t2 = 20t + -20t + 4t2 + -4t2

Combine like terms: 20t + -20t = 0
100 + -20t + -4t2 = 0 + 4t2 + -4t2
100 + -20t + -4t2 = 4t2 + -4t2

Combine like terms: 4t2 + -4t2 = 0
100 + -20t + -4t2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(25 + -5t + -1t2) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(25 + -5t + -1t2)' equal to zero and attempt to solve: Simplifying 25 + -5t + -1t2 = 0 Solving 25 + -5t + -1t2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -25 + 5t + t2 = 0 Move the constant term to the right: Add '25' to each side of the equation. -25 + 5t + 25 + t2 = 0 + 25 Reorder the terms: -25 + 25 + 5t + t2 = 0 + 25 Combine like terms: -25 + 25 = 0 0 + 5t + t2 = 0 + 25 5t + t2 = 0 + 25 Combine like terms: 0 + 25 = 25 5t + t2 = 25 The t term is 5t. Take half its coefficient (2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. 5t + 6.25 + t2 = 25 + 6.25 Reorder the terms: 6.25 + 5t + t2 = 25 + 6.25 Combine like terms: 25 + 6.25 = 31.25 6.25 + 5t + t2 = 31.25 Factor a perfect square on the left side: (t + 2.5)(t + 2.5) = 31.25 Calculate the square root of the right side: 5.590169944 Break this problem into two subproblems by setting (t + 2.5) equal to 5.590169944 and -5.590169944.

Subproblem 1

t + 2.5 = 5.590169944 Simplifying t + 2.5 = 5.590169944 Reorder the terms: 2.5 + t = 5.590169944 Solving 2.5 + t = 5.590169944 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + t = 5.590169944 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + t = 5.590169944 + -2.5 t = 5.590169944 + -2.5 Combine like terms: 5.590169944 + -2.5 = 3.090169944 t = 3.090169944 Simplifying t = 3.090169944

Subproblem 2

t + 2.5 = -5.590169944 Simplifying t + 2.5 = -5.590169944 Reorder the terms: 2.5 + t = -5.590169944 Solving 2.5 + t = -5.590169944 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + t = -5.590169944 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + t = -5.590169944 + -2.5 t = -5.590169944 + -2.5 Combine like terms: -5.590169944 + -2.5 = -8.090169944 t = -8.090169944 Simplifying t = -8.090169944

Solution

The solution to the problem is based on the solutions from the subproblems. t = {3.090169944, -8.090169944}

Solution

t = {3.090169944, -8.090169944}

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