r=-7.5(x^2-4x-320)

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Solution for r=-7.5(x^2-4x-320) equation: 


Simplifying
r = -7.5(x2 + -4x + -320)

Reorder the terms:
r = -7.5(-320 + -4x + x2)
r = (-320 * -7.5 + -4x * -7.5 + x2 * -7.5)
r = (2400 + 30x + -7.5x2)

Solving
r = 2400 + 30x + -7.5x2

Solving for variable 'r'.

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

Simplifying
r = 2400 + 30x + -7.5x2

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