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Simplifying
0 = -4t2 + 16 + 20
Reorder the terms:
0 = 16 + 20 + -4t2
Combine like terms: 16 + 20 = 36
0 = 36 + -4t2
Solving
0 = 36 + -4t2
Solving for variable 't'.
Move all terms containing t to the left, all other terms to the right.
Add '4t2' to each side of the equation.
0 + 4t2 = 36 + -4t2 + 4t2
Remove the zero:
4t2 = 36 + -4t2 + 4t2
Combine like terms: -4t2 + 4t2 = 0
4t2 = 36 + 0
4t2 = 36
Divide each side by '4'.
t2 = 9
Simplifying
t2 = 9
Take the square root of each side:
t = {-3, 3}
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