find a quadratic polynomial the sum and product of whose zeros are follows
-3and2
Answers
Answered by
0
Step-by-step explanation:
If zeros of quadratic polynomial f(x) are know, then find required polynomial by following formula
Let f(x)=k{x
2
−(sum of zeros)+x+product of zeros},
where k=a real number
Let f(x) be a polynomial
Sum and product of whose zeros are −3 and 2 respectively
f(x)=k[x
2
−(−3)x+2]=k[x
2
+3x+2] (∵k=real number)
Thus required polynomial f(x)=x
2
+3x+2
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Answered by
1
Answer:
Let the quadratic polynomial be ax
2
+bx+c and its zeros be α , β
We know that,
α+β=
a
−b
=
1
−(−11)
α×β=
a
c
=
1
10
If, a=1, b=11, c=10
Therefore,
The quadratic equation which fits the condition is x
2
+11x+10
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