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Simplifying
0 = y2 + -40
Reorder the terms:
0 = -40 + y2
Solving
0 = -40 + y2
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '-1y2' to each side of the equation.
0 + -1y2 = -40 + y2 + -1y2
Remove the zero:
-1y2 = -40 + y2 + -1y2
Combine like terms: y2 + -1y2 = 0
-1y2 = -40 + 0
-1y2 = -40
Divide each side by '-1'.
y2 = 40
Simplifying
y2 = 40
Take the square root of each side:
y = {-6.32455532, 6.32455532}
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