F(X)=5*SQRT(36+X^2)+4*(20-X)

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Solution for F(X)=5*SQRT(36+X^2)+4*(20-X) equation: 


Simplifying
F(X) = 5SQRT(36 + X2) + 4(20 + -1X)

Multiply F * X
FX = 5SQRT(36 + X2) + 4(20 + -1X)
FX = (36 * 5QRST + X2 * 5QRST) + 4(20 + -1X)
FX = (180QRST + 5QRSTX2) + 4(20 + -1X)
FX = 180QRST + 5QRSTX2 + (20 * 4 + -1X * 4)
FX = 180QRST + 5QRSTX2 + (80 + -4X)

Reorder the terms:
FX = 80 + 180QRST + 5QRSTX2 + -4X

Solving
FX = 80 + 180QRST + 5QRSTX2 + -4X

Solving for variable 'F'.

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

Divide each side by 'X'.
F = 80X-1 + 180QRSTX-1 + 5QRSTX + -4

Simplifying
F = 80X-1 + 180QRSTX-1 + 5QRSTX + -4

Reorder the terms:
F = -4 + 180QRSTX-1 + 5QRSTX + 80X-1

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