If -1 and 2 are zeroes of polynomial 2x cube -x square -5x -2. Find its third zero
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In case of polynomial ax³+bx²+cx+d=0
sum of zeros =-(b/a)
So in case of 2x³-x²-5x-2=0
Sum of zeroes =(-1)+2+m =-(-1/2) =1/2
m=(1/2)+1-2 =(-1/2)
So the third zero is (-1/2)
sum of zeros =-(b/a)
So in case of 2x³-x²-5x-2=0
Sum of zeroes =(-1)+2+m =-(-1/2) =1/2
m=(1/2)+1-2 =(-1/2)
So the third zero is (-1/2)
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