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Simplifying
Y2 + -8 + -20 = 0
Reorder the terms:
-8 + -20 + Y2 = 0
Combine like terms: -8 + -20 = -28
-28 + Y2 = 0
Solving
-28 + Y2 = 0
Solving for variable 'Y'.
Move all terms containing Y to the left, all other terms to the right.
Add '28' to each side of the equation.
-28 + 28 + Y2 = 0 + 28
Combine like terms: -28 + 28 = 0
0 + Y2 = 0 + 28
Y2 = 0 + 28
Combine like terms: 0 + 28 = 28
Y2 = 28
Simplifying
Y2 = 28
Take the square root of each side:
Y = {-5.291502622, 5.291502622}
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