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Simplifying
140s * 20s = 0
Reorder the terms for easier multiplication:
140 * 20s * s = 0
Multiply 140 * 20
2800s * s = 0
Multiply s * s
2800s2 = 0
Solving
2800s2 = 0
Solving for variable 's'.
Move all terms containing s to the left, all other terms to the right.
Divide each side by '2800'.
s2 = 0.00
Simplifying
s2 = 0.00
Take the square root of each side:
s = {0.00}
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