find the third zero of x3+2x2-x-2 if two roots are -1 and 1
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Answer:
-2
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Answered by
2
Answer:
x³+4-x+2
x³-x+2=0
is in the form ax²+bx+c=0
two of the zeroes are-1,1
let x be the third zero.
α+β+γ=-b/a
-1+1+x=1/1
0+x=1
the third zero=x=1.
x=1
Step-by-step explanation:
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