4=4+60t-16t^2

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Solution for 4=4+60t-16t^2 equation:


Simplifying
4 = 4 + 60t + -16t2

Add '-4' to each side of the equation.
4 + -4 = 4 + 60t + -4 + -16t2

Combine like terms: 4 + -4 = 0
0 = 4 + 60t + -4 + -16t2

Reorder the terms:
0 = 4 + -4 + 60t + -16t2

Combine like terms: 4 + -4 = 0
0 = 0 + 60t + -16t2
0 = 60t + -16t2

Solving
0 = 60t + -16t2

Solving for variable 't'.
Remove the zero:
-60t + 16t2 = 60t + -16t2 + -60t + 16t2

Reorder the terms:
-60t + 16t2 = 60t + -60t + -16t2 + 16t2

Combine like terms: 60t + -60t = 0
-60t + 16t2 = 0 + -16t2 + 16t2
-60t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
-60t + 16t2 = 0

Factor out the Greatest Common Factor (GCF), '4t'.
4t(-15 + 4t) = 0

Ignore the factor 4.

Subproblem 1

Set the factor 't' equal to zero and attempt to solve: Simplifying t = 0 Solving t = 0 Move all terms containing t to the left, all other terms to the right. Simplifying t = 0

Subproblem 2

Set the factor '(-15 + 4t)' equal to zero and attempt to solve: Simplifying -15 + 4t = 0 Solving -15 + 4t = 0 Move all terms containing t to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + 4t = 0 + 15 Combine like terms: -15 + 15 = 0 0 + 4t = 0 + 15 4t = 0 + 15 Combine like terms: 0 + 15 = 15 4t = 15 Divide each side by '4'. t = 3.75 Simplifying t = 3.75

Solution

t = {0, 3.75}

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