71.7=2.8u^2+54.7

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Solution for 71.7=2.8u^2+54.7 equation:


Simplifying
71.7 = 2.8u2 + 54.7

Reorder the terms:
71.7 = 54.7 + 2.8u2

Solving
71.7 = 54.7 + 2.8u2

Solving for variable 'u'.

Move all terms containing u to the left, all other terms to the right.

Add '-2.8u2' to each side of the equation.
71.7 + -2.8u2 = 54.7 + 2.8u2 + -2.8u2

Combine like terms: 2.8u2 + -2.8u2 = 0.0
71.7 + -2.8u2 = 54.7 + 0.0
71.7 + -2.8u2 = 54.7

Add '-71.7' to each side of the equation.
71.7 + -71.7 + -2.8u2 = 54.7 + -71.7

Combine like terms: 71.7 + -71.7 = 0.0
0.0 + -2.8u2 = 54.7 + -71.7
-2.8u2 = 54.7 + -71.7

Combine like terms: 54.7 + -71.7 = -17
-2.8u2 = -17

Divide each side by '-2.8'.
u2 = 6.071428571

Simplifying
u2 = 6.071428571

Take the square root of each side:
u = {-2.464026901, 2.464026901}

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