r=-25(x-10)(x+6)

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Solution for r=-25(x-10)(x+6) equation: 


Simplifying
r = -25(x + -10)(x + 6)

Reorder the terms:
r = -25(-10 + x)(x + 6)

Reorder the terms:
r = -25(-10 + x)(6 + x)

Multiply (-10 + x) * (6 + x)
r = -25(-10(6 + x) + x(6 + x))
r = -25((6 * -10 + x * -10) + x(6 + x))
r = -25((-60 + -10x) + x(6 + x))
r = -25(-60 + -10x + (6 * x + x * x))
r = -25(-60 + -10x + (6x + x2))

Combine like terms: -10x + 6x = -4x
r = -25(-60 + -4x + x2)
r = (-60 * -25 + -4x * -25 + x2 * -25)
r = (1500 + 100x + -25x2)

Solving
r = 1500 + 100x + -25x2

Solving for variable 'r'.

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

Simplifying
r = 1500 + 100x + -25x2

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