Question

If the value of a quadratic polynomial p(x) is 0 only at
x= -1 and p(-2)= 2. then the value of p(2) is
(a) 18
(b) 9
(c) 6
(d)3​

Answer 1

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the answer is (9)

Answer 2

Answer:

p(x)=0

when value of x is -1 then value of expression is 0

ax²+bx+c=0

at x=-1

a-b+c=0

at x=-2 value is 2

4a-2b+c=2

so by any method from 1 and 2 equations we get

a=0

b=-1

so when x =2 answer will be 9

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