((2w-4)w)/2=63

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Solution for ((2w-4)w)/2=63 equation: 


w in (-oo:+oo)

(w*(2*w-4))/2 = 63 // - 63

(w*(2*w-4))/2-63 = 0

(w*(2*w-4))/2+(-63*2)/2 = 0

w*(2*w-4)-63*2 = 0

2*w^2-4*w-126 = 0

2*w^2-4*w-126 = 0

2*(w^2-2*w-63) = 0

w^2-2*w-63 = 0

DELTA = (-2)^2-(-63*1*4)

DELTA = 256

DELTA > 0

w = (256^(1/2)+2)/(1*2) or w = (2-256^(1/2))/(1*2)

w = 9 or w = -7

2*(w+7)*(w-9) = 0

(2*(w+7)*(w-9))/2 = 0

(2*(w+7)*(w-9))/2 = 0 // * 2

2*(w+7)*(w-9) = 0

( w+7 )

w+7 = 0 // - 7

w = -7

( w-9 )

w-9 = 0 // + 9

w = 9

w in { -7, 9 }

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