w^2-2W-15=0

W^2-5W+3W-15=0

W(W-5)+3(W-5)=0

(W+3)(W-5)=0

either w=-3, w=5

2. 3V^2+4V-1=0

applying the quadratic formula, x=( -b+-sqrt(b^2-4ac))/2a

x= (-4+-(16--12)^0.5)/6

x1= 0.22

x2= -1.55........................best me

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