if 1 and -2 are two zeros of the polynomial x cube minus 4 x square - 7 x + 10 find its third zero
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1
Answer:
5
Step-by-step explanation:
W.K.T sum of theee zeroes of cubic polynomial is equal to -b/a
here,a=1 and b=-4
let another zero be is equal to P
1-2+P=4
-1+P=4
p=4+1
p=5
therefore another zero is 5
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