1500r-2(22/7)r^2-4r^2

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Solution for 1500r-2(22/7)r^2-4r^2 equation: 


r in (-oo:+oo)

1500*r-(2*(22/7)*r^2)-(4*r^2) = 0

(-44/7)*r^2-4*r^2+1500*r = 0

1500*r-72/7*r^2 = 0

DELTA = 1500^2-(-72/7*0*4)

DELTA = 2250000

DELTA > 0

r = (2250000^(1/2)-1500)/(-72/7*2) or r = (-2250000^(1/2)-1500)/(-72/7*2)

r = 0 or r = 875/6

r in { 0, 875/6 }

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